"Conversion of from Y-m-d H:i:s to m/d/Y H:i failed" error in logs, takes down entire database.

Hello. I’m running SuiteCRM 7.4.3. There’s a very bad bug that seems to happen after deleting a meeting. I get this error message in logs: “Conversion of 12/21/2015 09:00 from Y-m-d H:i:s to m/d/Y H:i failed” with the date/time being of the meeting deleted. Then the entire database becomes unreachable. I can still see the calendar and dashboard, but I’m unable to list data from any module. The only way to fix this so far is to restore a previous backup.

This is a serious bug that has brought down my SuiteCRM instance multiple times, and I only recently had this issue after upgrading to 7.4.3. What should I do?

Edit: I’m also getting the following error in logs: [ERROR] Unable to load related bean by id

Projects and cases modules seem to still work. All other modules are inaccessible, with the message “There was an error processing your request, please try again at a later time.”.

you need to specify your system, database, etc.

best regards