Fatal error: Uncaught Error: Class 'yii\db\mysql\ColumnSchemaBuilder' not found in /home/luxurytr/public_html/lt8/vendor/craftcms/cms/src/db/mysql/ColumnSchemaBuilder.php:18 Stack trace: #0 {main} thrown in /home/luxurytr/public_html/lt8/vendor/craftcms/cms/src/db/mysql/ColumnSchemaBuilder.php on line 18