I am trying to import a quiz from one class to another and this error comes up. I am fairly new to Moodle so I am not sure where to start looking.
What I do know. This error started occuring after I upgraded the server. I am currently running 3.9.2. I am not sure if it is realated the database or to the character set I am using. By default the server was set to utf8.
When clickiing on the link "More information about this error" it tells me that there is no information about this error. I really could use some help about where to start looking.