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closed What does this mean: The function goToQuestionnaire() uses an invalid argument () of type boolean

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in SoSci Survey (English) by s140618 (110 points)
closed by SoSci Survey

I have tried to randomize participants for two questionnaires but when I go to do the pretest to see if it works: The function goToQuestionnaire() uses an invalid argument () of type boolean comes up and I don't know how to fix it.

closed with the note: There is insufficient information to provide a qualified answer.
by SoSci Survey (330k points)
Please add the PHP code and the complete error message. Thank you.

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