Hello, It seems that we have found a bug in the App that occurs when a student attempts to answer in a Q and A forum. (This problem doesn't occur in the browser.)
When a student accesses a Q&A forum that already has replies, the app returns a "Invalid response value detected" error message. Turning on debugging yields a more detailed error message:
discussions => Invalid response value detected: posts => Invalid response value detected: userposts => Invalid response detected: timecreated => Invalid response value detected: Invalid external api response: the value is "" of PHP type "NULL", the server was expecting "int" type
I have verified the problem occurs on our server and also in our MoodleCloud server.