Why is error 500 coming out every week?

Question

Network administration

Hello! Every week (approximately) the site displays an error 500. Then after a while, the error disappears. I thought it was a bug in the code, but when the site was working, I made a copy of it. And when the error 500 came out, I tried to replace the files with a copy of the copy, but to no avail.
What could be the problem?

Answer 1

You need to look in the server logs. It describes what problem caused this error. Maybe there is no access to the file or to the database.

Answer 2

and what prevents instead of guessing on the coffee grounds just to look in the logs because of what the error is?

Answer 3

and the site does not go beyond host restrictions? I have this happens when exceeding simultaneous connections