Fatal error: Uncaught Error: Class "yii\db\ColumnSchemaBuilder" not found in /mnt/disk1/hosted/cuadro_mando/vendor/yiisoft/yii2/db/mysql/ColumnSchemaBuilder.php:18 Stack trace: #0 {main} thrown in /mnt/disk1/hosted/cuadro_mando/vendor/yiisoft/yii2/db/mysql/ColumnSchemaBuilder.php on line 18