Issue Cron task 503 error: Service Temporarily Unavailable

[Erwan]

Server operating system version

CentOS Linux 7.9

Plesk version and microupdate number

18.0.34

Hi all,

I have a 503 error Service Temporarily Unavailable with a cron PHP.
No problem so far.
PHP 7.2 / FPM by Apache.

I don't found clear information in the log.
I try to increase FcgidMaxProcesses & FcgidMaxProcessesPerClass but always the error.

Do you have an idea to solve the problem?

 

[Erwan]

Nobody?

 

[Erwan]

Do you know where I can find more information about the 503 error?
The task was working perfectly so far.