Fatal error: Uncaught Error: Class 'craft\db\Migration' not found in /home/luxurytr/public_html/lt8/vendor/nystudio107/craft-retour/src/migrations/Install.php:23 Stack trace: #0 {main} thrown in /home/luxurytr/public_html/lt8/vendor/nystudio107/craft-retour/src/migrations/Install.php on line 23