Fatal error: Uncaught Error: Interface "renderable" not found in C:\Apache24\htdocs\moodle\question\bank\viewquestiontext\classes\output\question_text_format.php:31 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\question\bank\viewquestiontext\classes\output\question_text_format.php on line 31