2021-11-30 11:29:03.566  WARN 1 --- [nio-8088-exec-6] ExceptionHandler                         : org.camunda.bpm.engine.OptimisticLockingException: ENGINE-03005 Execution of 'UPDATE VariableInstanceEntity[80187535-4ce9-11ec-be00-6a17de19f60b]' failed. Entity was updated by another transaction concurrently.
	at org.camunda.bpm.engine.impl.db.EnginePersistenceLogger.concurrentUpdateDbEntityException(EnginePersistenceLogger.java:136)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.handleConcurrentModification(DbEntityManager.java:413)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flushDbOperations(DbEntityManager.java:356)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flushDbOperationManager(DbEntityManager.java:323)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flush(DbEntityManager.java:295)
	at org.camunda.bpm.engine.impl.interceptor.CommandContext.flushSessions(CommandContext.java:272)
	at org.camunda.bpm.engine.impl.interceptor.CommandContext.close(CommandContext.java:188)
	at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:119)
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:72)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:70)
	at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70)
	at org.camunda.bpm.engine.impl.interceptor.CommandCounterInterceptor.execute(CommandCounterInterceptor.java:35)
	at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
	at org.camunda.bpm.engine.impl.AbstractQuery.executeResult(AbstractQuery.java:160)
	at org.camunda.bpm.engine.impl.AbstractQuery.singleResult(AbstractQuery.java:136)
	at org.camunda.bpm.engine.rest.sub.task.impl.TaskResourceImpl.getTaskById(TaskResourceImpl.java:255)
	at org.camunda.bpm.engine.rest.sub.task.impl.TaskResourceImpl.getJsonTask(TaskResourceImpl.java:150)
	at org.camunda.bpm.engine.rest.sub.task.impl.TaskResourceImpl.getTask(TaskResourceImpl.java:140)
	at jdk.internal.reflect.GeneratedMethodAccessor210.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)