Error 502 bad gateway

Hello
Today my traccar server 5.8 stops loading login page
The browser shows a 502 502 bad gateway error
I checked SSL certificate ans it is ok
DNS resolves to the correct IP
Firefox console says that there is an error to register/update service-worker.js
What can I do?

Is the server running?

Hi Anton
Yes, traccar/nginx/mysql all working. After several checks, I found out that the problem was insufficient disk space. I upgraded the storage space and the problem was fixed
By the way, can I delete server logs after say a month or so to save disk space?

Yes, you can.

https://www.traccar.org/clear-history/

Thank you Anton!!!!