An error with Magento 2 Admin panel page/Unable to access the admin page

[rachidalay7e80]

When logging into my admin panel it's throwing the error below, causing me to be unable to access the admin panel.

1 exception(s):
Exception #0 (InvalidArgumentException): Item with identifier Magefan_Community::elements does not exist

Exception #0 (InvalidArgumentException): Item with identifier Magefan_Community::elements does not exist
<pre>#1 Magefan\Community\Plugin\Magento\Backend\Model\Menu\BuilderPlugin->afterGetResult() called at [vendor/magento/framework/Interception/Interceptor.php:146]
#2 Magento\Backend\Model\Menu\Builder\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#3 Magento\Backend\Model\Menu\Builder\Interceptor->___callPlugins() called at [generated/code/Magento/Backend/Model/Menu/Builder/Interceptor.php:23]
#4 Magento\Backend\Model\Menu\Builder\Interceptor->getResult() called at [vendor/magento/module-backend/Model/Menu/Config.php:153]
#5 Magento\Backend\Model\Menu\Config->_initMenu() called at [vendor/magento/module-backend/Model/Menu/Config.php:116]
#6 Magento\Backend\Model\Menu\Config->getMenu() called at [vendor/magento/module-backend/Model/Url.php:365]
#7 Magento\Backend\Model\Url->_getMenu() called at [vendor/magento/module-backend/Model/Url.php:325]
#8 Magento\Backend\Model\Url->getStartupPageUrl() called at [vendor/magento/module-backend/App/AbstractAction.php:187]
#9 Magento\Backend\App\AbstractAction->_processUrlKeys() called at [vendor/magento/module-backend/App/Request/BackendValidator.php:175]
#10 Magento\Backend\App\Request\BackendValidator->validate() called at [vendor/magento/framework/App/Request/CompositeValidator.php:40]
#11 Magento\Framework\App\Request\CompositeValidator->validate() called at [vendor/magento/framework/App/FrontController.php:192]
#12 Magento\Framework\App\FrontController->processRequest() called at [vendor/magento/framework/App/FrontController.php:147]
#13 Magento\Framework\App\FrontController->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#14 Magento\Framework\App\FrontController\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#15 Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#16 Magento\Framework\App\FrontController\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/FrontController/Interceptor.php:23]
#17 Magento\Framework\App\FrontController\Interceptor->dispatch() called at [vendor/magento/framework/App/Http.php:116]
#18 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/App/Bootstrap.php:264]
#19 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:29]
</pre>

I haven't changed anything, but other accounts user access, and it began throwing this error. Any assistance would be much appreciated. Is it possible it being deleted from the DB could be causing this, or do you think the changing of a license key could also be the cause? 

[loteriaful929b]

The error you're seeing indicates that Magento can't find a menu item with the identifier Magefan_Community::elements. This error appears to be related to a plugin or module called "Magefan Community."

Here are some steps you can take to resolve this issue:

Check the module configuration: Make sure that the "Magefan Community" module is correctly installed and configured in your Magento installation. Verify that all the module files are present and that the module's configuration is correct.

Review menu configuration files: Look through the module's configuration files (menu.xml or other related files) to ensure that the identifier Magefan_Community::elements is defined correctly and corresponds to a valid menu item.

Temporarily disable the module: If you can't find a quick solution, you can try temporarily disabling the "Magefan Community" module to see if the error disappears. This may help you determine if the problem is specifically related to this module.

Check compatibility: Make sure that the "Magefan Community" module is compatible with the version of Magento you're using. Some issues may arise due to version incompatibilities.

Seek assistance: If you're unable to resolve the problem on your own, consider seeking help on Magento forums, in the "Magefan Community" module documentation, or by contacting the module developer for additional assistance.

By following these steps, you should be able to resolve the error related to the missing menu item in Magento.

[Milople]

Hello @rachidalay7e80, 

The error message you're seeing indicates that Magento is trying to load a menu item with the identifier Magefan_Community::elements, but it cannot find it. This is likely caused by an issue with the Magefan Community module.

Ensure that the Magefan Community module is enabled and properly installed. You can check the status of the module using the command line.

php bin/magento module:status Magefan_Community

 is it is disabled then enable it and if it is enabled then try reinstalling or updating it using following command:

composer remove magefan/module-community
composer require magefan/module-community
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento cache:flush

Verify Menu Configuration

Check the menu.xml files in your custom modules and themes to ensure that there are no incorrect or missing entries related to Magefan_Community::elements

Check Database for Menu Entries

If the issue persists, check the database to ensure that the relevant entries for Magefan_Community are present.

SQL Query to Check Menu Entries:

SELECT * FROM `authorization_rule` WHERE `resource_id` LIKE '%Magefan_Community%';

If these entries are missing or incorrect, you might need to re-add them or correct any discrepancies. After this you should be able to diagnose and fix the issue preventing you from accessing the Magento admin panel.

If the issue will be resolved, Click Kudos & Accept as a Solution.