By activate "OAuth2" getting a status code 500

kleinaItaliener

Hello everyone,

I am currently running the following environment:

osTicket version: 1.18.3 (up to date)
Server: Apache
MySQL: 8.0.44
PHP: 8.5.0
Enabled PHP extensions:
gdlib, iconv, imap, ctype, xml, xml-dom, json, mbstring, phar, intl, fileinfo, zip, Zend OPcache
(APCu is not enabled)

The core system is running without any issues.

The Issue

When I download the auth-oauth2 plugin from GitHub and place the .php files into:

httpdocs/include/plugins/ the plugin becomes visible in the admin panel under Manage → Plugins.

However, as soon as I click Activate, the system immediately returns:

HTTP Status Code 500

The error occurs instantly during activation even before configuring any email account or OAuth provider. No specific email configuration is set up at that time.

If I rename or remove the auth-oauth2 file via FTP, the system works normally again.

What I Have Verified

phar extension is enabled
Required standard extensions are active
File permissions are correct (644 for files, 755 for directories)
No custom disable_functions restrictions affecting phar
Core installation works fine without the plugin

Has anyone experienced a similar issue with auth-oauth2 on osTicket 1.18.3 and PHP 8.5?

Is there a known compatibility issue with newer PHP versions, or additional requirements that are not listed in the system overview?

Any guidance would be appreciated.

Thank you in advance for your help.

KevinTheJedi

kleinaItaliener

Well you should always review the system requirements before installing. You would’ve seen that we only support PHP 8.2-8.4 at this time. Not saying PHP 8.5 is the issue but it’s not supported yet so it could very well be. Downgrade to a known supported version and retest.

If that still returns 500 then you’ll simply need to look at all possible logs (general server logs, webserver error logs, PHP error logs, MySQL/MariaDB error logs, osTicket System Logs, Browser Console logs, etc.) for any related errors.

Cheers.