Fatal error: Uncaught Error: Class "Flake\Core\Controller" not found in /home/ternalis/agenda/Core/Frameworks/BaikalAdmin/Controller/Install/UpgradeConfirmation.php:32 Stack trace: #0 {main} thrown in /home/ternalis/agenda/Core/Frameworks/BaikalAdmin/Controller/Install/UpgradeConfirmation.php on line 32