Fatal error: Uncaught Error: Class 'NinjaForms\Includes\Entities\SimpleEntity' not found in /home/clmepl5/public_html/web/app/plugins/ninja-forms/includes/Entities/SubmissionExtraHandlerResponse.php:10 Stack trace: #0 {main} thrown in /home/clmepl5/public_html/web/app/plugins/ninja-forms/includes/Entities/SubmissionExtraHandlerResponse.php on line 10