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  1. Moodle app
  2. MOBILE-3764

Q&A forum produces "Invalid response value detected" error in App

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Details

    • Bug
    • Resolution: Won't Do
    • Minor
    • None
    • 3.9.4
    • Forum add-on
    • MOODLE_39_STABLE

    Description

      It seems that we have found a bug in the forum activity that only affects the App. (This problem doesn't occur in a mobile browser.)
       
      When a student using the movile app accesses a Q&A forum thread 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

      FULL STEPS:

      1. In an existing course as TEACHER, create a forum of the "Q and A forum" forum type & add a new question to the forum.
      2. Access course as STUDENT 1 & answer the question in the Q and A forum.
      3. Access course as STUDENT 2 using the mobile app & attempt to answer question in Q and A forum.

      WHAT IS EXPECTED:

      Student 2 answers forum question and reads other student replies.

      WHAT ACTUALLY HAPPENS:

      Student 2 receives an "Invalid response value detected" error in App and cannot answer the question in the app. (The Q and A forum functions as expected if there are no student responses. That is, Student 1 did not receive an error message even if answering using the app.)

      WORKAROUND:
      Opening the forum in a mobile browser will allow students to post to the forum. Tap the 3 dots in the top right corner of the screen and then tap "Open in browser".
       
      We have reproduced this problem on our server also on our MoodleCloud account.
       

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              Unassigned Unassigned
              tim@horizoneducationnetwork.org Tim Bahula
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                Created:
                Updated:
                Resolved:

                Clockify

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