Edit file File name : slim.php Content :<?php use Api\Core\Loader\CustomLoader; return CustomLoader::mergeCustomArray([ 'settings' => [ /** Additional information about exceptions are displayed by the default error handler. */ 'displayErrorDetails' => true, /** Routes are accessible in middleware. */ 'determineRouteBeforeAppMiddleware' => true, 'addContentLengthHeader' => false, ] ], basename(__FILE__)); Save