SUMMARY :-
 While transferring timesheet information from Web Timesheet to Quickbooks, you might encounter an error that says 'An error Occurred. A detailed information has been logged'.(Picture1) However, when you check the log files, there is no information regarding this failure.

RESOLUTION :-
 This issue happens, when one of the timesheets being transferred might contain a "Vertical Tab Character" in one of the comments section. This character (which might no be visible sometimes) will cause the integration to break the moment it encounters it.
  You will have to transfer timesheets in smaller batches until you encounter that timesheet which will break the integration. Remove all comments from that timesheet and then continue with transferring data in bulk.