I've been having problems on certain submissions from participants. I've developed an external form to register to our survey (we create the user via limesurvey api through our form). It is working ok, but when the user reaches the last page and clicks the "send results" button it gives an error 500 on POST request.
The thing is the responses are being stored ok and when I check the information about them it shows that the survey has been completed, but the table of participants shows different information (no date and not completed).
I don't know why an error is being thrown with no info at all.
However, if I add a participant manually in the limesurvey web he can complete the survey without any problem.
Does anybody know how to discover the error? Some error log file to study? Versión 3.0.0-beta.3+170914
As you said, we've updated the version to 3.0.4. The problem seems to have disappeared in development and we're testing it right now in a production enviroment.
As soon as we consider it resolved I will reply this topic again.