PHP8.1 error

I've today started getting a error that causes Joomla to fail to load. Turning on debugging reveals something in SCP (see image). Disabling the component fixes the problem.


It's worth mentioning that the site was running fine until I uninstalled an old plugin. I've tried reinstalling the latest version of SCP, but it didn't fix.

I'm in the process of upgrading to J4 and PHP8 was the first step.

I'm running:
Joomla 3.10.11
SCP 3.5.1
PHP 8.1.9
MySQL 8.0.30

Hi Helsinkisisu,

It's really odd as latest version (3.5.1) is fully compatible with PHP 8.1 and also J4. For some reason that function receives a not valid comparison operator and that's why you get the error.

Did you try uninstalling the entire extension and reinstalling it? If you did it, could I get access to the site (FTP and backend) to do some tests? If so please send me administrative credentials to the email from which you receive forum notifications.

Regards,
Jose

I've restored the site from backup and it's working fine again.

The old plugin I uninstalled from the J3 live site was only disabled on the upgraded J4 test site. I just uninstalled it and there with no problem.

I'll try it again on the J3 site to see if the problem repeats. I can quickly restore again if needed.

Ok, I will be ready to help you if the problem arises again.

Regards,
Jose

OK, I disabled the rogue plugin (Perfect Link with Article Images on Facebook PRO), then uninstalled it from J3 again. Site broken again.

I disabled SCP in the DB, reinstalled the plugin, then enabled SCP. Still broken.

Site restored from backup again now.

So uninstalling the plugin does something that breaks SCP and/or J3 but the plugin's installation doesn't reverse the break.

The plugin is no longer used, and isn't J4 compatible (and I don't think it's even still available). However, if you would like a copy to see if you can spot anything in the uninstall script, I am happy to send you a copy (35kB).

Hi Helsinkisisu,

That function checks extensions installed against the vulnerabilities database. For some reason when that extension is unistalled it breaks the process. Please, send me the extension to do some tests.

Regards,
Jose