Fatal error: Uncaught Error: Class 'Illuminate\Database\Migrations\Migration' not found in /var/www/dev/public/database/migrations/2020/2020_09_09_110400_UpdateRetenciones.php:8 Stack trace: #0 {main} thrown in /var/www/dev/public/database/migrations/2020/2020_09_09_110400_UpdateRetenciones.php on line 8