Error in log: Please check jail has possibly a timezone issue

[MCMic]

Describe the bug

I always get this kind of log lines from fail2ban:

    [nextcloud] Please check jail has possibly a timezone issue. Line with odd timestamp: {"reqId":"PEVID4Xyl8Lz9eormxrU","level":1,"time":"2023-12-06T16:45:02+00:00","remoteAddr":"","user":"--","app":"calendar","method":"","url":"--","message":"Found and deleted 0 outdated booking confirmations.","userAgent":"--","version":"27.1.2.1","data":{"app":"calendar"}}: 1 Time(s)
    [nextcloud] Simulate NOW in operation since found time has too large deviation None ~ 1701881102.55879 +/- 60: 1 Time(s)
*A clear and concise description of what the bug is.*

Context

• Hardware: Old laptop or computer
• YunoHost version: 11.2.5
• I have access to my server: Through SSH | through the webadmin | direct access via keyboard / screen | ...
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: no

Steps to reproduce

It happens in each log report I get by email.

Expected behavior

No timezone error in fail2ban logs