【FLink】access closed classloader classloader. check-leaked-classloader

1. summary

Submit today in an environment flink Mission , This flink The task was originally adapted , It uses flink 1.9.1, Then this adaptation is to use flink 1.12 Then an error is reported when submitting the task

Exception in thread "Thread-6" java.lang.IllegalStateException: Trying to access closed classloader. Please check if you store classloaders directly or indirectly in static fields. If the stacktrace suggests that the leak occurs in a third party library and cannot be fixed immediately, you can disable this check with the configuration 'classloader.check-leaked-classloader'.

Details are as follows

Exception in thread "Thread-6"