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Issue Cron task 503 error: Service Temporarily Unavailable

Erwan

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