500 Internal Server Error

[Dobrodukh]

Hi. Recently my forum stopped working. Error "500 Internal Server Error". Now I restored from backup, but I would like to understand and prevent such errors in the future. Attach the error log before the forum stopped working. What was the problem?

 

[ForumFlex]

Did you make any changes in the code before you got the internal server error? or it just suddenly happened?

 

[Dobrodukh]

I installed a new template. But I think that's not the problem. But he wasn't even active. No more changes were made.

 

[ForumFlex]

I saw the log you provided here, and looks like the issue was "Premature end of script headers" it is related to a file permissions that was change. Your problem might be the same on this thread https://xenforo.com/community/threads/premature-end-of-script-headers-index-php.40397/

 

[Dobrodukh]

I was able to recover the work of the forum on other hosting. But now keep getting errors. For example, when creating a new topic or in the admin. Screenshots attached. What could be the reason?

 

[Paul B]

That could indicate an incomplete or corrupt restore.

Are you sure the database was viable?
Did you also restore the server files?
Are they compatible?

 

[Dobrodukh]

It was automatic backup hosting. Now I am trying a second time to recover, but from my personal backup. Later I will write about the results.

 

[Mike]

I think this would indicate that the files haven't been fully restored properly. I would reupload from a fresh copy downloaded from the customer area.

 

[Dobrodukh]

Thanks. Helped restore the old backup. I do not understand why it happened. Topic can be closed.