all other pages are working but the main page is not working, although the system files were not edited, everything was working 1-3 hours ago
Admin
2
A HTTP ERROR 500 error means that your PHP code crashed. And I think the first thing to figure out is what’s crashing exactly.
What error message do you see when you enable display_errors?
404 is displayed correctly
That was not the question. Can you enable display errors and reload the page that is not working?