Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\database\migrations\2021_04_28_125430_create_contract_variables_table.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\database\migrations\2021_04_28_125430_create_contract_variables_table.php on line 10