Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /var/www/html/repo/invoicing-salepropos/database/migrations/2019_11_13_150206_create_product_variants_table.php:7 Stack trace: #0 {main} thrown in /var/www/html/repo/invoicing-salepropos/database/migrations/2019_11_13_150206_create_product_variants_table.php on line 7