They are not compatible. After I install, I get an "0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()" and the whole site locks up.
Solved
Templates
Joomla 4.0 and helixultimate_template_j3_v1.1.4
Accepted answer
Marked as the solution
Rashida Rahman Staff
5 years ago
· edited
Hi there!
The stable version of Joomla 4 has just released!
We have made compatible some of our products with unstable versions of Joomla 4.
So, we will try the stable one with all the issues you all face and report soon.
Did you try the environment for test purpose, please?
I would apologise and like to request you to roll back to the last working version.
Note: Upgrading to Joomla 4 right now in production sites is not recommended. There are many third-party extensions like ours that are not fully compatible yet. It is better to wait at least a couple of weeks to see how things are going (It is applicable for each and every new release). Meanwhile, we will update our products accordingly.
Best Regards
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