I just migrated an Akeeba Backup archive to my staging server for testing. Everything seems to be working, but upon opening AdminTools > Web Application FIrewall, I experience this:
Admin Tools for Joomla!- An unhandled Exception has been detected 500 Layout default not found.
File <root>/libraries/src/MVC/View/HtmlView.php Line 425
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Joomla 5.2.4 – PHP 8.2.27 on Linux
Debug informationException type: Exception
#0 /html/libraries/src/MVC/View/HtmlView.php(204): Joomla\CMS\MVC\View\HtmlView->loadTemplate()
#1 /html/administrator/components/com_admintools/src/View/Webapplicationfirewall/HtmlView.php(25): Joomla\CMS\MVC\View\HtmlView->display()
#2 /html/libraries/src/MVC/Controller/BaseController.php(697): Akeeba\Component\AdminTools\Administrator\View\Webapplicationfirewall\HtmlView->display()
#3 /html/administrator/components/com_admintools/src/Mixin/ControllerEventsTrait.php(73): Joomla\CMS\MVC\Controller\BaseController->display()
#4 /html/libraries/src/Dispatcher/ComponentDispatcher.php(143): Akeeba\Component\AdminTools\Administrator\Controller\WebapplicationfirewallController->execute()
#5 /html/administrator/components/com_admintools/src/Dispatcher/Dispatcher.php(68): Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch()
#6 /html/libraries/src/Component/ComponentHelper.php(361): Akeeba\Component\AdminTools\Administrator\Dispatcher\Dispatcher->dispatch()
#7 /html/libraries/src/Application/AdministratorApplication.php(150): Joomla\CMS\Component\ComponentHelper::renderComponent()
#8 /html/libraries/src/Application/AdministratorApplication.php(205): Joomla\CMS\Application\AdministratorApplication->dispatch()
#9 /html/libraries/src/Application/CMSApplication.php(306): Joomla\CMS\Application\AdministratorApplication->doExecute()
#10 /html/administrator/includes/app.php(58): Joomla\CMS\Application\CMSApplication->execute()
#11 /html/administrator/index.php(32): require_once('...')
#12 {main}
There are pages of details. I went back to the other server, and tested the Web Application Firewall. It was fine. I created a new Akeeba Backup, and tried the migration again, but I get the same error.