Migrating and Upgrading to Joomla! 4.x • Error: "Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()"

Hi everyone

I just upgraded from 3.10.x to 4.4.5 and ran into a big problem.

I know I'm not the first. I have already read several topics but in other cases it was clear that the problem was some incompatible extension.

In my case, I can't figure it out. It seems that the error is with joomla and not with extensions.
Can someone help me? I am grateful to you:


Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()

Call stack
#FunctionLocation
1()JROOT/libraries/src/Component/ComponentHelper.php:357
2Joomla\CMS\Component\ComponentHelper::renderComponent()JROOT/libraries/src/Application/SiteApplication.php:208
3Joomla\CMS\Application\SiteApplication->dispatch()JROOT/libraries/src/Application/SiteApplication.php:249
4Joomla\CMS\Application\SiteApplication->doExecute()JROOT/libraries/src/Application/CMSApplication.php:293
5Joomla\CMS\Application\CMSApplication->execute()JROOT/includes/app.php:61
6require_once()JROOT/index.php:32


Thanks again

Statistics: Posted by gatesco — Thu Jun 27, 2024 6:32 pm

---