Exception when activity form is not fully completed

This will be covered by MDLQA-7301 and MDLQA-7299 BUT a bit of extra testing would help ensure this does not break anything else: Note: There is a warning you will get round steps 3/4 about htmlspecialchars being given an array rather than a string - this is expected and will be fixed by MDL-47752 Log in as a teacher Create a new forum setting: Aggregation type to average Scale to none Completion tracking to "Show activity as complete when conditions are met" Check require grade Click Save and Display Check you get a validation error on Aggregation type about needing to select a scale Select a scale Click Save and Display and check it works this time. Create a second forum and this time just give it the required fields. Check it works correctly. Edit the second forum you created and try to set an aggregation type but not a scale. Check you get that same validation error again. Repeat the above with glossaries Test creating an assignment activity