Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/sourceex/public_html/pm/database/migrations/2021_09_15_190915_add_column_calculate_tax.php:7 Stack trace: #0 {main} thrown in /home/sourceex/public_html/pm/database/migrations/2021_09_15_190915_add_column_calculate_tax.php on line 7