Psychopy to Pavlovia | Experiment doesn't run

[Catarina_Alves_Ribei]

jsPsych version (e.g. 7.3.1): From Phsychopy to Pavlovia, the experiment doesn’t run because of this error: “when converting an object to its numerical form, unable to convert null to a number”.

[wakecarter]

Are you using PsychoPy?

Something is null.

Wakefield's Daily Tips

ReferenceError: varName is not defined This is one of the most common errors in online experiments [image] It is also one of the easiest to solve. The issue is one of “scope”. To define a variable so it has scope across your whole experiment, all you have to do is assign it a value. Don’t edit your JavaScript to add “var” or “let” commands. To give your variable scope assign the value in a Begin Experiment code component tab outside any clauses (i.e. no Python indents). [image] I usually s…

Wakefield's Daily Tips

unable to convert undefined to a number This error is usually caused by having a blank cell in a spreadsheet which your experiment tries to use as a component parameter that needs to be a number, such as the position of a visual stimulus. [image] If you can’t find a blank cell, it can be more difficult to trace the error because the line itself doesn’t appear in the Developer Tools. [image]