Hello,
When I'm installing the template Bianca J4 (v1.1.6) I got the following error when I try to open the backend.
Class "Joomla\Plugin\Behaviour\Taggable\Extension\Taggable" not found
Herefore I found the following solution: remove the file 'autoload_psr4.php' in the administrator/cache folder. Then refresh the backend.
That helps.
But what also happens is that I directly has two items from each button "to go to the website" and "user menu". I don't know how to recover that.
Can you help?
Thanks
Kees