500 error in administrator

Question

A new error on my website occured. I think I did not make any changes that could cause this problem.

I can login in admin normally and then when I click on everything except installed components there is 500 server error. In error logs I can find nothing about it.

Any sugestions please?

Thank you! Filip

Answer 1

Some things to try (assuming you can get to some or all of these pages):

• update to the latest version of Joomla (if you haven't already)
• update third party extensions to the latest versions
• switch to the alternative admin template to see if the issue is template related
• check if you have any third party administrator modules installed and if so, temporarily disable these to see if this helps
• similarly, check what third party plugins are installed and temporarily disable these to see if this helps

Some other things to try are:

• rename your .htaccess file to .htaccess.old and copy the default htaccess.txt to .htaccess to test if the issue may be caused by something in your .htaccess file
• temporarily disable Search Engine Friendly URLs and URL Rewriting to see if this helps (if you can't get to Global Configuration in the back-end, edit the configuration.php file and set public $sef = '0'; and public $sef_rewrite = '0';
• back up your website and try running the "Reinstall Joomla core files" option in Components -> Joomla Update

Also check with your hosting company whether they have any ideas (e.g. could mod_security be causing this?).

Answer 2

If you are using Linux, make sure installed components have correct permissions.