Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/mydemotec/public_html/windstream/database/migrations/2021_06_05_130920_add_columns_existing.php:7 Stack trace: #0 {main} thrown in /home/mydemotec/public_html/windstream/database/migrations/2021_06_05_130920_add_columns_existing.php on line 7