Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\database\migrations\2021_07_29_165510_alter_table_name_contract_variable_to_document_variables.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\database\migrations\2021_07_29_165510_alter_table_name_contract_variable_to_document_variables.php on line 7