Found this db error in the logs

12-Dec-2019 23:27:18.415 SEVERE [main] org.camunda.commons.logging.BaseLogger.logError ENGINE-16004 Exception while closing command context: ENGINE-03004 Exception while executing Database Operation ‘INSERT UserOperationLogEntryEventEntity[f031db75-1d36-11ea-b3ce-000c29b18906]’ wit$

Error flushing statements. Cause: org.apache.ibatis.executor.BatchExecutorException: org.camunda.bpm.engine.impl.history.event.UserOperationLogEntryEventEntity.insertUserOperationLogEntryEvent (batch index #3) failed. 2 prior sub executor(s) completed successfully, but will be$

    ID_,
    DEPLOYMENT_ID_,
    PROC_DEF_ID_,
    PROC_DEF_KEY_,
    ROOT_PROC_INST_ID_,
    PROC_INST_ID_,
    EXECUTION_ID_,
    CASE_DEF_ID_,
    CASE_INST_ID_,
    CASE_EXECUTION_ID_,

was aborted: ERROR: column “annotation_” of relation “act_hi_op_log” does not exist
Position: 598 Call getNextException to see other errors in the batch.'. Flush summary:
[
INSERT HistoricVariableInstanceEntity[f0313f32-1d36-11ea-b3ce-000c29b18906]
INSERT AuthorizationEntity[f014dd90-1d36-11ea-b3ce-000c29b18906]
INSERT UserOperationLogEntryEventEntity[f031db75-1d36-11ea-b3ce-000c29b18906]
INSERT HistoricVariableUpdateEventEntity[f0313f33-1d36-11ea-b3ce-000c29b18906]
INSERT HistoricIdentityLinkLogEventEntity[f01504a1-1d36-11ea-b3ce-000c29b18906]
INSERT VariableInstanceEntity[f0313f32-1d36-11ea-b3ce-000c29b18906]
UPDATE TaskEntity[efa74ea2-1d36-11ea-b3ce-000c29b18906]
UPDATE HistoricActivityInstanceEventEntity[approveInvoice:efa74ea1-1d36-11ea-b3ce-000c29b18906]
UPDATE HistoricTaskInstanceEventEntity[efa74ea2-1d36-11ea-b3ce-000c29b18906]

Looks like I had to update the schema…Solved…

I am facing similar issue. Could you please elaborate on how you fixed this issue?