500 Internal server error I have a site running Drupal 7, and hosted on GoDaddy.

I use Filezilla FTP client to upload the files, or do any kind of file management on the server.

When I upload a file, the site shows a 500 error. After 25-30 minutes, the site starts working as usual.

This happens every time I upload a file.
I have this error number of times while refreshing or uploading modules.
it seems to be a server error. because some time server does not respond.