Solved Helix Framework

Error on Joomla 4.2 update

Asked by Olivier Frascone 4 years ago Last activity 4 years ago

Hi,
After updating to Joomla 4.2 we experiment on ALL sites using Helig Ultimate the following error :

Class 'Joomla\Plugin\Behaviour\Taggable\Extension\Taggable' not found

When debug is enable :

ClassNotFoundError
Symfony\Component\ErrorHandler\Error\ClassNotFoundError:
Attempted to load class "Helper" from namespace "HelixUltimate\Framework\Platform".
Did you forget a "use" statement for another namespace?

Thanks for your fix

Accepted answer

Marked as the solution

Olivier Frascone Asked this

4 years ago

And finaly the fix for people who have same problem :
https://github.com/joomla/joomla-cms/issues/38474

6 more replies

Olivier Frascone Asked this

4 years ago · edited

I disabled the following plugins to have it back working :

plg_behaviour_taggable
plg_behaviour_versionable
plg_actionlog_joomla
plg_system_schedulerunner

Hope it helps, i will try to isolate the problem but it seems to be a problem with Joomla 4.2 update.
Thanks for your answer

Paul Frankowski Senior Staff

4 years ago

So it's sort of Joomla bug?

Olivier Frascone Asked this

4 years ago

Hello Paul, yeah the problem was with the administrator/cache/autoload_psr4.php not being regenerated after update.
Do the upgrade, then manually DELETE this file -this allows the site to come online again and is then an up to date Joomla 4.2.0 with a regenerated autoload_psr4.php
Thanks.
Olivier

Paul Frankowski Senior Staff

4 years ago · edited

Thanks for details. Yesterday I was too tired to think clear.

Good Joomla tip for everyone here.

And information that is not Joomshaper bug this time ;] hahahha

blue_Shift

4 years ago · edited

deleting autoload_prs4.php did not work for me. I hade made an Akeeba copy of a development site running J 4.1.5 on the same server, and front and back end of the production site are both bricked.

Doesn't joomla test this stuff? I'm in the middle of a complete disaster.

blue_Shift

4 years ago · edited

I completely blew away the contents of the root folder, and reinstalled the akeeba - and now it's a website again. I am afraid to update Joomla at this point. Getting this particular project, a large one going back to 2011, into Konstra and then J4 has been an ordeal.