novice-gamer commented on issue #12440:
URL: 
https://github.com/apache/dolphinscheduler/issues/12440#issuecomment-1510938034

   Version 3.1.5 still has this error message
   ```shell
   [INFO] 2023-04-17 16:37:25.272 +0800 
org.apache.dolphinscheduler.server.master.event.WorkflowEventQueue:[38] - 
[WorkflowInstance-0][TaskInstance-0] - Added workflow event to workflowEvent 
queue, event: WorkflowEvent(workflowEventType=START_WORKFLOW, 
workflowInstanceId=76)
   [INFO] 2023-04-17 16:37:25.272 +0800 
org.apache.dolphinscheduler.server.master.runner.WorkflowEventLooper:[78] - 
[WorkflowInstance-76][TaskInstance-0] - Workflow event looper receive a 
workflow event: WorkflowEvent(workflowEventType=START_WORKFLOW, 
workflowInstanceId=76), will handle this
   [INFO] 2023-04-17 16:37:25.273 +0800 
org.apache.dolphinscheduler.server.master.event.WorkflowStartEventHandler:[54] 
- [WorkflowInstance-76][TaskInstance-0] - Handle workflow start event, begin to 
start a workflow, event: WorkflowEvent(workflowEventType=START_WORKFLOW, 
workflowInstanceId=76)
   [INFO] 2023-04-17 16:37:25.273 +0800 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable:[1732] 
- [WorkflowInstance-76][TaskInstance-0] - Add task to stand by list, task 
name:凭安企业清洗, task id:null, task code:9250878476832
   [INFO] 2023-04-17 16:37:25.273 +0800 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable:[1408] 
- [WorkflowInstance-76][TaskInstance-0] - The dependTasks of task all success, 
currentTaskCode: 9250878476832, dependTaskCodes: [9250878476834]
   [INFO] 2023-04-17 16:37:25.273 +0800 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable:[1839] 
- [WorkflowInstance-76][TaskInstance-0] - The dependResult of task 凭安企业清洗 is 
success, so ready to submit to execute
   [ERROR] 2023-04-17 16:37:25.274 +0800 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable:[1015] 
- [WorkflowInstance-76][TaskInstance-0] - Submit standby task 凭安企业清洗 error, 
taskCode: 9250878476832
   java.lang.NullPointerException: null
   [ERROR] 2023-04-17 16:37:25.274 +0800 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable:[704] 
- [WorkflowInstance-0][TaskInstance-0] - Start workflow error
   java.lang.NullPointerException: null
           at 
java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011)
           at 
java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006)
           at 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable.submitStandByTask(WorkflowExecuteRunnable.java:1850)
           at 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable.submitPostNode(WorkflowExecuteRunnable.java:1362)
           at 
org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteRunnable.call(WorkflowExecuteRunnable.java:698)
           at 
java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
           at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
           at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
           at java.lang.Thread.run(Thread.java:748)
   [ERROR] 2023-04-17 16:37:25.274 +0800 
org.apache.dolphinscheduler.server.master.event.WorkflowStartEventHandler:[72] 
- [WorkflowInstance-0][TaskInstance-0] - Failed to submit the workflow 
instance, will resend the workflow start event: 
WorkflowEvent(workflowEventType=START_WORKFLOW, workflowInstanceId=76)
   ```


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