Hi,

I am reaching out to you due to an issue I have encountered after upgrading from Joomla 3 to Joomla 4 on a test site. Before executing the upgrade, I disabled the plugins for my Regular Labs extensions. The upgrade seemed successful at first.

However, when I tried to reinstall the ReReplacer, I encountered a few errors:


https://drive.google.com/file/d/1A3DeR1w0j1J2KFpdV43UXOC74g2kOT9b/view?usp=sharing


Despite these errors, I continued with reinstalling the Cache cleaner, and that's when a major problem arose. Now, I'm dealing with an Error 500, which is affecting the entire backend of the site.

How can I fix, please?

Many thanks and regards

Many thanks Peter,

following your steps I was able to restore the backend and complete the last steps.

If I encounter the same problem on other sites I need to update, now I know how to fix it.

Best regards