Hello Alex,

Thanks for reaching out to us.

I have added a fixed version of the template to address the issue. Please check it now on the test site and let me know if everything is working correctly.

Thanks!

I tried disabling the backward compatibility plugin, and the site stopped working again. https://yadi.sk/i/9okhvbArHb4CaA https://yadi.sk/d/w40Kqm5ff0-jtw

Without these plugins, the system will not work properly. You need to keep them enabled.

Thanks!

But there is a guide that clearly states this plugin needs to be disabled before the update.https://guide.joomla.org/user-manual/migration/joomla-5-to-6-planning-and-upgrade-step-by-step This recommendation also appears during an update.https://yadi.sk/i/r8Q9khxjjn8mmg I'll try updating with the plugin enabled.

Ziaul I managed to update to Joomla version 6 using the archive file. The update went smoothly, and the site is working. Could you tell me if I need to make any changes to the template on the main domain—and if so, which ones—or should I perhaps overwrite the modified file? Please specify the necessary changes.

Yes. When you upgrade to Joomla 6, you need to disable the Behaviour - Backward Compatibility plugin during the upgrade.

After the upgrade is complete, you need to enable the Behaviour - Backward Compatibility 6 plugin.

We only modified the templates/error.php file to fix your issues.

Thanks!

I still haven't quite figured this out:

1. Do I need to overwrite the templates/error.php file or just modify specific lines of code?
2. I managed to update to version 6 without disabling the compatibility file. I’m still not sure what the correct approach is. I have two other sites, and I might run into the same issues there.

This week, I plan to update another site to the latest version of Joomla 6. The site is built using the Finion template, which I have already updated to the latest version, 2.1.2. Please answer the following questions:

1. Do I need to make any code changes to the error.php file before updating to Joomla 6?
2. I will copy the code from that file and paste it here; could you please review it and let me know what changes are required?

P.S. Or should I start a separate forum thread for this topic?

I tried copying the code and pasting it into the forum thread, but I couldn't do it because of the character limit. I'll post the website addres

Please complete the Joomla 6 upgrade process first.

After the upgrade is completed successfully, replace the existing templates/error.php file with the attached error.php file.

Before replacing the file, please create a ZIP backup of the current error.php file so that it can be restored if necessary.

The order should be:

1. Complete the Joomla 6 upgrade.
2. Confirm that the upgrade has completed successfully.
3. Create a ZIP backup of the current error.php file.
4. Replace the current error.php with the attached file.
5. Test the website and confirm that everything is working correctly.

error.php.zip

Thanks

Ziaul, I followed your instructions exactly. I managed to update to Joomla version 6 without any issues. I replaced the error file, and the site is working. Thanks for the help.