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Version of osTicket?
Did you re-create the folder?
If Yes, Did you check the file permissions on the newly recreated folder?
Did you disable, remove and uninstall the Attachments::Filesystem plugin?
PHP Error logs?
[unknown] webserver error logs?
A 500 code is a general error that simply says the something has gone wrong on the webserver software and it could not be more specific.
- Generally to troubleshoot these you will want to try clearing your browser cache and cookies and try again.
- If that does not work (and I find it rarely does) then you will need dig a little deeper into the server side.
This means you will want to check your Apache access and error logs as well as your php error logs (if not combined) and see if there is anything logged there.
The most common causes are:
- wrong file/directory permissions or ownership
- a misconfigured .htaccess