Fatal error: Uncaught Error: Class "craft\db\MigrationManager" not found in /home/cooperativamaism/public_html/staging/vendor/craftcms/cms/src/config/app.php:174 Stack trace: #0 {main} thrown in /home/cooperativamaism/public_html/staging/vendor/craftcms/cms/src/config/app.php on line 174