Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in E:\phpProject\TEST\fr_epr\fr_epr_reg\app\Http\Controllers\EprReg\XlsxMergeController.php:12 Stack trace: #0 {main} thrown in E:\phpProject\TEST\fr_epr\fr_epr_reg\app\Http\Controllers\EprReg\XlsxMergeController.php on line 12