Problem with one domain

[endorama]

Hi,

I have strange problem with one of sites on the server. Other websites works just fine.

domain (and its subdomains) is stopping to respond (503 error), when I do rebuild php or apache it works for few hours and then just stops. Can someone point me to how I can trobleshoot this problem.

 

[ericosman]

Is it running on a different PHP version?
Check the logs.

 

[endorama]

I am running only one version of PHP (7.4), and even when site is not using php its not responding. In apache logs I see i had one subdomain error which I had moved directory of, tried deleting the subdomain in direct admin to see if it will help.