Fatal error: Uncaught Error: Class 'craft\db\Migration' not found in /home/luxurytr/public_html/lt8/vendor/putyourlightson/craft-blitz/src/migrations/m180703_120000_add_siteid_column.php:7 Stack trace: #0 {main} thrown in /home/luxurytr/public_html/lt8/vendor/putyourlightson/craft-blitz/src/migrations/m180703_120000_add_siteid_column.php on line 7