Mysql warning when creating an event

DOLIBARR ENVIRONMENT
- Version: [9.0.2]
- Operating System: [Linux Debian 4.18.20-2]
- Web Server: [Apache 2.4.6]
- PHP: [7.2.16]
- Database: [MySQL 5.5.5]
- URL(s): [/comm/action/card.php]

Since I update to dolibarr 9.2 and PHO from 7.0 to 7.2
I get this mysql error message when creating an event.
When going back on the event overviw, the as error submitted event is however safed
I don’t know if it is a misconfiguration from my side or a bug in 9.02 or a problem with PHP 7.2… Any hint?

Dear Choy,

This is a warning that you have not and error, due to php 7.2
Dev team correct them one by one, but you can disable warning in your php configuration