Error Code

error description

An error occurs during task execution:error code : 01001，error msg : Your task is not routed to the background ECM，Please contact the administrator

The em of labels

Reason 1

Your task is not routed to the background ECM

Solution 1

1. Check whether the tenant label is correct

2. If yes, contact the administrator

error description

An error occurs during task execution:error code : 01002，error msg : The Linkis service load is too high. Contact the administrator to expand the capacity

Unexpected end of file from server

Reason 1

The linkis service load is too high, resulting in abnormal service connection

Solution 1

Please contact the administrator

error description

An error occurs during task execution:error code : 01003，error msg : The linkis service load is too high. Please contact the administrator for capacity expansion

failed to ask linkis Manager Can be retried SocketTimeoutException

Reason 1

The link service load is too high, resulting in service connection timeout

Solution 1

Contact administrator

error description

An error occurs during task execution:error code : 01004，error msg : The engine is killed at startup,Please contact the administrator

[0-9]+ Killed

Reason 1

The engine was killed at startup because the machine load was too high

Solution 1

1. you can choose to retry
2. or contact the administrator

error description

An error occurs during task execution:error code : 01005，error msg : Request Yan to get the queue information and retry for 2 times still failed, please contact the administrator

Failed to request external resourceClassCastException

Reason 1

Failed to request Yan to obtain queue information. This is caused by a configuration problem

Solution 1

Please contact the administrator

error description

An error occurs during task execution:error code : 01101，error msg : ECM resources are insufficient, please contact the administrator for capacity expansion

ECM resources are insufficient

Reason 1

Due to insufficient server resources, possibly during peak hours

Solution 1

1. you can retry the task
2. or contact the administrator

error description

An error occurs during task execution:error code : 01102，error msg : ECM memory resources are insufficient. Please contact the administrator for capacity expansion

ECM memory resources are insufficient

Reason 1

Insufficient server memory resources

Solution 1

1. you can retry the task
2. or contact the administrator

error description

An error occurs during task execution:error code : 01103，error msg : ECM CPU resources are insufficient. Please contact the administrator for capacity expansion

ECM CPU resources are insufficient

Reason 1

Insufficient server CPU resources

Solution 1

1. you can retry the task
2. or contact the administrator

error description

An error occurs during task execution:error code : 01104，error msg : Instance resources are insufficient. Please contact the administrator for capacity expansion

ECM Insufficient number of instances

Reason 1

Insufficient server instance resources

Solution 1

1. you can retry the task
2. or contact the administrator

error description

An error occurs during task execution:error code : 01105，error msg : The machine is out of memory. Please contact the administrator for capacity expansion

Cannot allocate memory

Reason 1

Server machine out of memory

Solution 1

1. you can retry the task

2. or contact the administrator

error description

An error occurs during task execution:error code : 12001，error msg : The queue CPU resource is insufficient. You can adjust the number of spark actuators

Queue CPU resources are insufficient

Reason 1

The queue CPU resource is insufficient, exceeding the limit you set

Solution 1

• Open the DSS platform and click management console — parameter configuration — ide — spark — display advanced settings — Walker engine resource settings (2) — adjust the number of concurrent executors [spark.executor.instances]

• 

• Or adjust the upper limit of queue resource usage on the management console — parameter configuration — global settings

error description

An error occurs during task execution:error code : 12002，error msg : The queue memory resources are insufficient. You can adjust the number of spark actuators

Insufficient queue memory

Reason 1

The queue memory resource is insufficient, which exceeds the queue memory resource value you set

Solution 1

• Open the DSS platform and click management console — parameter configuration — ide — spark — display advanced settings — Walker engine resource settings (2) — adjust the number of concurrent executors [spark.executor.instances]

• 

• Or adjust the upper limit of queue resource usage on the management console - parameter configuration - global settings

error description

An error occurs during task execution:error code : 12003，error msg : The number of queue instances exceeds the limit

Insufficient number of queue instances

Reason 1

The number of queue instances exceeds the limit

Solution 1

• Open the DSS platform and click management console - parameter configuration - global settings - queue resources - maximum number of yarn queue instances [wds.links.rm.yarnqueue.instance.max]
• 

Remarks

Users are not recommended to modify the global settings at will. If necessary, please contact the operation and maintenance department before modifying. Non global setting parameters, which can be modified by the user

error description

An error occurs during task execution:error code : 12004，error msg : Global drive memory usage limit, lower drive memory can be set

Drive memory resources are insufficient

Reason 1

Global drive memory exceeds maximum

Solution 1

• Open the DSS platform and click management console - parameter configuration - global settings - queue resources - maximum number of yarn queue instances [wds.links.rm.yarnqueue.instance.max]
• 

Solution 2

• If the queue is available and the number of application instances is too low, you can contact the administrator to set

Remarks

Users are not recommended to modify the global settings at will. If necessary, please contact the operation and maintenance department before modifying. Non global setting parameters, which can be modified by the user

error description

An error occurs during task execution:error code : 12005，error msg : If the maximum number of global drive CPUs is exceeded, idle engines can be cleaned up

Drive core resources are insufficient

Reason 1

The number of global drive CPUs exceeds the maximum

Solution 1

• Open the DSS platform and click management console - parameter configuration - global settings - queue resources - upper limit of queue CPU [wds.links.rm.yarnqueue.cores.max]
• 

Solution 2

• Clean up idle engines

Remarks

Users are not recommended to modify the global settings at will. If necessary, please contact the operation and maintenance department before modifying. Non global setting parameters, which can be modified by the user

error description

An error occurs during task execution:error code : 12006，error msg : If the maximum number of concurrent engines is exceeded, idle engines can be cleaned up

Insufficient number of instances

Reason 1

Maximum engine concurrency exceeded

Solution 1

• Modify the configuration and global configuration: open the DSS platform and click management console - parameter configuration - global settings - queue resources - global maximum concurrency of each engine [wds.links.rm.instance]
• 
• spark engine
• 
• hive engine
• 
• python engine
• 
• pipeline engine
• 

Remarks

Users are not recommended to modify the global settings at will. If necessary, please contact the operation and maintenance department before modifying. Non global setting parameters, which can be modified by the user

error description

An error occurs during task execution:error code : 12008，error msg : Exception in getting the yarn queue information. It may be that the yarn queue you set does not exist

获取Yarn队列信息异常

Reason 1

Exception in getting Yan queue information

Solution 1

• If the cluster is normal and the user queue is configured incorrectly:
• Linkis management console / parameter configuration > global settings >yarn queue name [wds.linkis.rm.yarnqueue]
• 

Solution 2

• If the cluster is a new cluster, first check the cluster configuration of linkismanager

  Hadoop cluster address: http://ip:8088/cluster

  yarn cluster address:http://ip:8888/cluster/scheduler

  Remarks

Users are not recommended to modify the global settings at will. If necessary, please contact the operation and maintenance department before modifying. Non global setting parameters, which can be modified by the user

error description

An error occurs during task execution:error code : 12009，error msg : Session creation failed. The%s queue does not exist. Please check whether the queue settings are correct

queue (\S+) is not exists in YARN

Reason 1

The queue does not exist. Please check whether the queue settings are correct

Solution 1

• The user contacts the administrator to confirm whether the queue is correct
• 

error description

An error occurs during task execution:error code : 12010，error msg : The cluster queue memory resources are insufficient. You can contact people in the group to release resources

Insufficient cluster queue memory

Reason 1

Insufficient cluster queue memory resources

Solution 1

• Check whether the resource memory is full. The user contacts the personnel in the group to release the resource, or applies for queue expansion
• 

error description

An error occurs during task execution:error code : 12011，error msg : Cluster queue CPU resources are insufficient. You can contact people in the group to release resources

Insufficient cluster queue cpu

Reason 1

Insufficient cluster queue CPU resources

Solution 1

• Check whether the resource CPU is full. The user contacts the personnel in the group to release the resource, or applies for queue expansion
• 

error description

An error occurs during task execution:error code : 12013，error msg : Insufficient resources cause the engine to timeout. You can retry the task

wait for DefaultEngineConn

Reason 1

Starting the engine timed out due to insufficient resources

Solution 1

The user retries the task. If it occurs repeatedly, please contact the administrator for troubleshooting

error description

An error occurs during task execution:error code : 12014，error msg : The request engine timed out, which may be caused by insufficient queue resources. Please try again

wait for engineConn initial timeout

Reason 1

Request engine timed out

Solution 1

The user retries the task. If it occurs repeatedly, please contact the administrator for troubleshooting

error description

An error occurs during task execution:error code : 13001，error msg : Java process memory overflow, it is recommended to optimize the script content

OutOfMemoryError

Reason 1

Java process memory overflow

Solution 1

• The user tries to increase the memory configuration of the Java management side. If it occurs repeatedly, please contact the administrator for troubleshooting
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idespark — spark engine resource settings (2) — spark engine memory [spark.driver.memory]
• 

error description

An error occurs during task execution:error code : 13002，error msg : The use of resources is too large. Please tune SQL or increase resources

Container killed by YARN for exceeding memory limits

Reason 1

Use resources too large

Solution 1

• Increase the memory of the executor in the management console or in the task submission
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idspark — worker resource settings (2) — worker memory size [spark.executor.memory]
• 

error description

An error occurs during task execution:error code : 13003，error msg : The use of resources is too large. Please tune SQL or increase resources

read record exception

Reason 1

Use resources too large

Solution 1

• After confirming with the administrator, the user can increase the memory of the executor in the management console or in the task submission
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idspark — worker resource settings (2) — worker memory size [spark.executor.memory]
• 

error description

An error occurs during task execution:error code : 13004，error msg : The engine exited unexpectedly, which may be caused by excessive use of resources

failed because the engine quitted unexpectedly

Reason 1

Unexpected engine exit

Solution 1

Contact the administrator for troubleshooting

error description

An error occurs during task execution:error code : 13005，error msg : Spark app exit may be caused by complex tasks

Spark application has already stopped

Reason 1

Spark app exit may be caused by complex tasks

Solution 1

• The user tries to increase the memory configuration of the Java management side. If it occurs repeatedly, please contact the administrator for troubleshooting
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idespark — spark engine resource settings (2) — spark engine memory [spark.driver.memory]
• 

Solution 2

• After confirming with the administrator, the user can increase the memory of the executor in the management console or in the task submission
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idspark — worker resource settings (2) — worker memory size [spark.executor.memory]
• 

error description

An error occurs during task execution:error code : 13006，error msg : Spark context exits, which may be caused by complex tasks

Spark application has already stopped

Reason 1

Spark context exits, which may be caused by complex tasks

Solution 1

• The user tries to increase the memory configuration of the Java management side. If it occurs repeatedly, please contact the administrator for troubleshooting
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idespark — spark engine resource settings (2) — spark engine memory [spark.driver.memory]
• 

Solution 2

• After confirming with the administrator, the user can increase the memory of the executor in the management console or in the task submission
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idspark — worker resource settings (2) — worker memory size [spark.executor.memory]
• 

error description

An error occurs during task execution:error code : 13007，error msg : Pyspark child process exited unexpectedly, which may be caused by complex tasks

Pyspark process has stopped

Reason 1

Pyspark child process exited unexpectedly, which may be caused by complex tasks

Solution 1

• The user tries to increase the memory configuration of the Java management side. If it occurs repeatedly, please contact the administrator for troubleshooting
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idespark — spark engine resource settings (2) — spark engine memory [spark.driver.memory]
• 

error description

An error occurs during task execution:error code : 21001，error msg : Session creation failed, user%s cannot submit application to queue:%s, please contact the person who provided the queue to you

User (\S+) cannot submit applications to queue (\S+)

Reason 1

Session creation failed, user%s cannot submit application to queue

Solution 1

The user queue does not have permission. Please check whether the queue configuration is wrong or apply for queue permission

error description

An error occurs during task execution:error code : 21002，error msg : Failed to create Python interpreter, please contact the administrator

initialize python executor failed

Reason 1

Failed to create Python interpreter, please contact the administrator

Solution 1

Contact the operation and maintenance personnel for troubleshooting

error description

An error occurs during task execution:error code : 21003，error msg : Failed to create stand-alone Python interpreter, please contact the administrator

PythonSession process cannot be initialized

Reason 1

Failed to create Python interpreter, please contact the administrator

Solution 1

Contact the operation and maintenance personnel for troubleshooting

error description

An error occurs during task execution:error code : 22001，error msg : %S has no permission to access. Please apply for permission to open the data table. Please contact your data management personnel

Permission denied:\suser=[a-zA-Z0-9_]+,\saccess=[A-Z]+\s,\sinode=”([a-zA-Z0-9/_.]+)

Reason 1

Unauthorized access

Solution 1

• Database table permission needs to be applied to

error description

An error occurs during task execution:error code : 22003，error msg : The checked database table has no permission

Authorization failed:No privilege

Reason 1

Unauthorized access

Solution 1

• Database table permission needs to be applied to

error description

An error occurs during task execution:error code : 22004，error msg : The user%s does not exist on the machine. Please confirm whether you have applied for relevant permissions

user (\S+) does not exist

Reason 1

Unauthorized access

Solution 1

• User bill of lading application authority

error description

An error occurs during task execution:error code : 22005，error msg : The user does not exist on the machine. Please confirm whether you have applied for relevant permissions

engineConnExec.sh: Permission denied

Reason 1

Unauthorized access

Solution 1

• User bill of lading application authority

error description

An error occurs during task execution:error code : 22006，error msg : The user does not exist on the machine. Please confirm whether you have applied for relevant permissions

at com.sun.security.auth.UnixPrincipal

Reason 1

Unauthorized access

Solution 1

• User bill of lading application authority

error description

An error occurs during task execution:error code : 22007，error msg : The user does not exist on the machine. Please confirm whether you have applied for relevant permissions

LoginException: java.lang.NullPointerException: invalid null input: name

Reason 1

Unauthorized access

Solution 1

• User bill of lading application authority

error description

An error occurs during task execution:error code : 22008，error msg : The user does not exist on the machine. Please confirm whether you have applied for relevant permissions

User not known to the underlying authentication module

Reason 1

Unauthorized access

Solution 1

• User bill of lading application authority

error description

An error occurs during task execution:error code : 30001，error msg : Library exceeds limit

is exceeded

Reason 1

Library exceeds limit

Solution 1

Users clean up data by themselves

Solution 2

Apply for database expansion

error description

An error occurs during task execution:error code : 31001，error msg : User active kill task

is killed by user

Reason 1

User active kill task

Solution 1

• If it is confirmed that the user has not actively killed, please contact the operation and maintenance personnel for troubleshooting

error description

An error occurs during task execution:error code : 31002，error msg : The enginetypelabel you submitted does not have a corresponding engine version

EngineConnPluginNotFoundException

Reason 1

Enginetypelabel has no corresponding engine version

Solution 1

• The user checks whether the enginetypelabel passed is correct. If it is correct, please contact the operation and maintenance personnel for troubleshooting
• Inspection method of the operation and maintenance personnel: the lib/links-engineconn-plugins/ on the linkis ECP node is the local cache of all available engine plug-ins. This is not possible because the corresponding version of the engine is not available, or there are other abnormal format files in the engine file, such as Bak, you shouldn’t have put zip. Zip, etc

error description

An error occurs during task execution:error code : 41001，error msg : The database%s does not exist. Please check whether the referenced database is correct

Database ‘([a-zA-Z_0-9]+)’ not found

Reason 1

Database %s does not exist

Solution 1

• User checks whether the database exists and permissions

• show databases

error description

An error occurs during task execution:error code : 41001，error msg : The database%s does not exist. Please check whether the referenced database is correct

Database does not exist: ([a-zA-Z_0-9]+)

Reason 1

Database %s does not exist

Solution 1

• User checks whether the database exists and permissions

• show databases

error description

An error occurs during task execution:error code : 41003，error msg : The field%s does not exist. Please check whether the referenced field is correct

cannot resolve ‘(.+)‘ given input columns

Reason 1

Field %s does not exist

Solution 1

• User checks whether the field exists

  desc tabl_name

error description

An error occurs during task execution:error code : 41003，error msg : The field%s does not exist. Please check whether the referenced field is correct

Column ‘(.+)’ cannot be resolved

Reason 1

Field %s does not exist

Solution 1

• User checks whether the field exists

  desc tabl_name

error description

An error occurs during task execution:error code : 41003，error msg : The field%s does not exist. Please check whether the referenced field is correct

Invalid table alias or column reference ‘(.+)’:

Reason 1

Field %s does not exist

Solution 1

• User checks whether the field exists

  desc tabl_name

error description

An error occurs during task execution:error code : 41004，error msg : Partition field%s does not exist. Please check whether the referenced table is a partition table or the partition field is incorrect

Partition spec {(\S+)} contains non-partition columns

Reason 1

Partition field %s does not exist

Solution 1

• The user checks whether the partition field is filled in correctly

error description

An error occurs during task execution:error code : 41004，error msg : Partition field%s does not exist. Please check whether the referenced table is a partition table or the partition field is incorrect

table is not partitioned but partition spec exists:{(.+)}

Reason 1

Partition field %s does not exist

Solution 1

• The user checks whether the partition field is filled in correctly

error description

An error occurs during task execution:error code : 41004，error msg : The path corresponding to the table does not exist. Please contact your data manager

Path does not exist: viewfs

Reason 1

Partition path does not exist

Solution 1

• Please try refresh table XXX, or the kill engine runs again, but there are still exceptions. Please contact the data management personnel for troubleshooting

error description

An error occurs during task execution:error code : 41004，error msg : Field%s does not exist, please check whether the referenced table%s is a partition table or the partition field is incorrect

([a-zA-Z_0-9]+) is not a valid partition column in table ([`.a-zA-Z_0-9]+)

Reason 1

Field %s does not exist

Solution 1

• The user checks whether the partition field is filled in correctly

error description

An error occurs during task execution:error code : 41005，error msg : File %s does not exist

Caused by:\s*java.io.FileNotFoundException

Reason 1

File %s does not exist

Solution 1

• Please try refresh table XXX, or the kill engine runs again, but there are still exceptions. Please contact the data management personnel for troubleshooting

error description

An error occurs during task execution:error code : 42003，error msg : Unknown function%s, please check whether the function referenced in the code is correct

Undefined function: ‘(\S+)’

Reason 1

Error in referenced function

Solution 1

• If it is a UDF, please check the function. If it is a public function, please contact the operation and maintenance personnel for troubleshooting
• udf address

error description

An error occurs during task execution:error code : 42003，error msg : Unknown function%s, please check whether the function referenced in the code is correct

Invalid function ‘(\S+)’

Reason 1

Error in referenced function

Solution 1

• If it is a UDF, please check the function. If it is a public function, please contact the operation and maintenance personnel for troubleshooting
• udf address

error description

An error occurs during task execution:error code : 42004，error msg : There is a name conflict in the field%s, please check whether there is a field with the same name in the sub query

Ambiguous column Reference ‘(\S+)’ in subquery

Reason 1

Name conflict in field %s

Solution 1

• User checks whether there is a duplicate name field

error description

An error occurs during task execution:error code : 42004，error msg : There is a name conflict in the field%s, please check whether there is a field with the same name in the sub query

Reference ‘(\S+)’ is ambiguous

Reason 1

Name conflict in field %s

Solution 1

• User checks whether there is a duplicate name field

error description

An error occurs during task execution:error code : 42005，error msg : The field%s must specify a table or subquery alias. Please check the source of the field

Column ‘(\S+)’ Found in more than One Tables/Subqueries

Reason 1

Field does not specify a table

Solution 1

• User added field source

error description

An error occurs during task execution:error code : 42006，error msg : The table%s already exists in the database. Please delete the corresponding table and try again

Table already exists

Reason 1

Table %s already exists in the database

Solution 1

• The user needs to clean up the table and try again

error description

An error occurs during task execution:error code : 42006，error msg : Table %s already exists in the database，Please delete the corresponding table and try again

AnalysisException: (S+) already exists

Reason 1

Table %s already exists in the database

Solution 1

• The user needs to clean up the table and try again

error description

An error occurs during task execution:error code : 42006，error msg : Table %s already exists in the database，Please delete the corresponding table and try again

Table (\S+) already exists

Reason 1

Table %s already exists in the database

Solution 1

• The user needs to clean up the table and try again

error description

An error occurs during task execution:error code : 42006，error msg : Table %s already exists in the database，Please delete the corresponding table and try again

Table or view ‘(\S+)’ already exists in database ‘(\S+)’

Reason 1

Table %s already exists in the database

Solution 1

• The user needs to clean up the table and try again

error description

An error occurs during task execution:error code : 42007，error msg : The number of fields in the inserted target table does not match, please check the code!

requires that the data to be inserted have the same number of columns as the target table

Reason 1

Insert target table field quantity mismatch

Solution 1

• User check code

error description

An error occurs during task execution:error code : 42008，error msg : Data type does not match, please check the code!

due to data type mismatch: differing types in

Reason 1

data type mismatch

Solution 1

• User check code

error description

An error occurs during task execution:error code : 42009，error msg : The reference of field%s is incorrect. Please check whether the field exists!

Invalid column reference (S+)

Reason 1

Incorrect reference to field %s

Solution 1

• User checks whether the field exists

error description

An error occurs during task execution:error code : 42010，error msg : Failed to extract data for field %s

Can’t extract value from (S+): need

Reason 1

Failed to extract data for field %s

Solution 1

• Check whether the selected field is incorrect

error description

An error occurs during task execution:error code : 42012，error msg : Group by position 2 is not in the select list, please check the code!

GROUP BY position (S+) is not in select list

Reason 1

The field of group by is not in the select list

Solution 1

• User check code

error description

An error occurs during task execution:error code : 42014，error msg : Insert data does not specify target table field%s, please check the code!

Cannot insert into target table because column number/types are different ‘(S+)’

Reason 1

The inserted data does not correspond to the fields of the target table

Solution 1

• User check code

error description

An error occurs during task execution:error code : 42016，error msg : UDF function does not specify a parameter, please check the code!

UDFArgumentException Argument expected

Reason 1

UDF function does not specify full parameters

Solution 1

• User check code

error description

An error occurs during task execution:error code : 42017，error msg : Aggregate function%s cannot be written in group by, please check the code!

aggregate functions are not allowed in GROUP BY

Reason 1

Aggregate function%s cannot be written in group by, please check the code!

Solution 1

• User check code

error description

An error occurs during task execution:error code : 43007，error msg : Pyspark execution failed, possibly due to syntax error or stage failure

Py4JJavaError: An error occurred

Reason 1

Syntax error or stage failure

Solution 1

• If it is a syntax error, you need to check the code for modification
• If the stage fails, you can choose to retry

error description

An error occurs during task execution:error code : 43011，error msg : Export excel table exceeds the maximum limit of 1048575

Invalid row number

Reason 1

Data volume exceeds the limit of a single sheet

Solution 1

• Reduce the amount of data to export, or export to CSV format

error description

An error occurs during task execution:error code : 43040，error msg : Presto query must specify data source and Library Information

Schema must be specified when session schema is not set

Reason 1

Data source configuration error

Solution 1

• Check management console Presto data source configuration
• Modify the configuration, open the DSS platform, and click management console — parameter configuration — ide — idepresto — data source configuration
• 

error description

An error occurs during task execution:error code : 46001，error msg : Import file address not found:%s

java.io.FileNotFoundException: (\S+) (No such file or directory)

Reason 1

file does not exist

Solution 1

• Please check the workspace, or check whether the files in the HDFS directory exist
• 

error description

An error occurs during task execution:error code : 46002，error msg : Exception of temporary file directory permission when exporting to excel

java.io.IOException: Permission denied(.+) at org.apache.poi.xssf.streaming.SXSSFWorkbook.createAndRegisterSXSSFSheet

Reason 1

Abnormal file directory or insufficient file read / write permission

Solution 1

• Please confirm that the file has read-write permission. If there is any abnormality, please contact the operation and maintenance personnel for handling

error description

An error occurs during task execution:error code : 46003，error msg : Unable to create directory while exporting file:%s

java.io.IOException: Mkdirs failed to create (\S+) (.+)

Reason 1

Unable to create directory

Solution 1

• Contact the operation and maintenance personnel for troubleshooting

error description

An error occurs during task execution:error code : 46004，error msg : Error importing module. The system does not have a%s module. Please contact the operation and maintenance personnel to install it

ImportError: No module named (S+)

Reason 1

The system does not have a %s module

Solution 1

• Contact the operation and maintenance personnel for troubleshooting