Cannot access to Backend and Frontend

[joomleb]

Hi guys, PHP 7.4.33 + Joomla 4.2.8 After a J3 upgrade, apparently gone well I suddenly have no access to Joomla 4.2.8 Frontend and Backend when logging (tested with different users). I have back this Error message:

An error has occurred. 0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()

Call stack

1 | () | JROOT/plugins/authentication/accesslogging/accesslogging.php:57 2 | plgauthenticationAccessLogging->onUserAuthenticate() | JROOT/libraries/src/Authentication/Authentication.php:175 3 | Joomla\CMS\Authentication\Authentication->authenticate() | JROOT/libraries/src/Application/CMSApplication.php:816 4 | Joomla\CMS\Application\CMSApplication->login() | JROOT/libraries/src/Application/AdministratorApplication.php:337 5 | Joomla\CMS\Application\AdministratorApplication->login() | JROOT/administrator/components/com_login/src/Controller/DisplayController.php:82 6 | Joomla\Component\Login\Administrator\Controller\DisplayController->login() | JROOT/libraries/src/MVC/Controller/BaseController.php:672 7 | Joomla\CMS\MVC\Controller\BaseController->execute() | JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:143 8 | Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() | JROOT/administrator/components/com_login/src/Dispatcher/Dispatcher.php:45 9 | Joomla\Component\Login\Administrator\Dispatcher\Dispatcher->dispatch() | JROOT/libraries/src/Component/ComponentHelper.php:355 10 | Joomla\CMS\Component\ComponentHelper::renderComponent() | JROOT/libraries/src/Application/AdministratorApplication.php:143 11 | Joomla\CMS\Application\AdministratorApplication->dispatch() | JROOT/libraries/src/Application/AdministratorApplication.php:186 12 | Joomla\CMS\Application\AdministratorApplication->doExecute() | JROOT/libraries/src/Application/CMSApplication.php:294 13 | Joomla\CMS\Application\CMSApplication->execute() | JROOT/administrator/includes/app.php:61 14 | require_once() | JROOT/administrator/index.php:32

Please, Do you have any suggestion ? What am I missing ?

[richard67]

Switch on debug in configuration.php then you should see a call stack which tells you which 3rd party is xtension causes this error. Closing this issue here as it is definitely caused by a 3rd party extension and not by the CMS. Please use the support forum for such questions.

[joomleb]

@richard67 following the Brian tutorial here, what I reported is the debug report.

Please, the .../plugins/authentication/accesslogging/accesslogging.php:57 Which 3rd party extension is it from?

[richard67]

Google for it. It is not from the CMS core.

[joomleb]

Yes, sure, I tried it by typing: "Joomla /plugins/authentication/accesslogging/accesslogging.php" But there are no results.

Please, Do you have any idea on how I can process to discover it ? I'm not using much 3rd party extension, thinking it has to be related with login I have 2 suspects: Admin Tools, Seblod

[richard67]

The xml file inside the plugin‘s folder should tell who the author is. Maybe there are also copyright statements in the PHP files or that plugin providing such information.

[joomleb]

@richard67 You're right, what a fool I was!

It is the "Authentication - WAP Admin Access Logging" by "SiteGuarding.com" I was testing before the update to J4. Through phpMyAdmin I disabled it and the bug has been solved.

Thank You very much for help on understanding it !