Sophos Enterprise Console

Sophos Enterprise Coonsole v 5.4.1 is installed

Since 16th of Sptember 2017 I get daily up to 4  errors in event logs

Event ID 0 ; Source PatchFeedProcessor

Patches have not been successfully updated in the last three days

In PatchFeedProcessor.log are lots of these entries:

2017-10-26 06:29:00 | PID  14896 | TID      1 | Information | -----PROGRAM START-----
2017-10-26 06:29:43 | PID  14896 | TID      1 | Information | An SQL exception has been caught while executing 'usp_pf_insupdPatch'. Execution will be retried. Location = 'Execute command', SQL Error Code = '-2146232060', Message = 'Cannot insert duplicate key row in object 'dbo.Patch' with unique index 'IX_Patch_2'. The duplicate key value is (MS12-078 Security Update for Windows Server 2008 (KB2753842)).
Failed to update patch
The statement has been terminated.'
2017-10-26 06:29:43 | PID  14896 | TID      1 | Information | Error(Number='2601',Message='Cannot insert duplicate key row in object 'dbo.Patch' with unique index 'IX_Patch_2'. The duplicate key value is (MS12-078 Security Update for Windows Server 2008 (KB2753842)).',Source='.Net SqlClient Data Provider',State='1')
2017-10-26 06:29:43 | PID  14896 | TID      1 | Information | Error(Number='50000',Message='Failed to update patch',Source='.Net SqlClient Data Provider',State='22')
2017-10-26 06:29:43 | PID  14896 | TID      1 | Information | Error(Number='3621',Message='The statement has been terminated.',Source='.Net SqlClient Data Provider',State='0')
2017-10-26 06:29:43 | PID  14896 | TID      1 | Information | An SQL exception has been caught while executing 'usp_pf_insupdPatch'. Execution will be retried. Location = 'Execute command', SQL Error Code = '-2146232060', Message = 'Cannot insert duplicate key row in object 'dbo.Patch' with unique index 'IX_Patch_2'. The duplicate key value is (MS12-078 Security Update for Windows Server 2008 (KB2753842)).
Failed to update patch

Any help is highly appreciated. Thanks,

Martin