Fatal error: Uncaught Error: Class "craft\db\Migration" not found in /home/corporatenwocp/public_html/vendor/solspace/craft-freeform/packages/plugin/src/migrations/m190501_124050_MergingEditionsMigration.php:15 Stack trace: #0 {main} thrown in /home/corporatenwocp/public_html/vendor/solspace/craft-freeform/packages/plugin/src/migrations/m190501_124050_MergingEditionsMigration.php on line 15