ReferenceError: Can't find variable: os When trying to run experiment on pavlovia

URL of experiment: VG2openIAT [PsychoPy]

Description of the problem: My experiment worked on psychopy and was uploaded successfully to pavlovia. However when I try to run the experiment on pavlovia (to check it works) I get this error
Unfortunately we encountered the following error:

  • ReferenceError: Can’t find variable: os

I’m not sure what to do. I am on MAC and have the latest update of psychopy.

I have also now downloaded psychopy 2021.2.3 and reuploaded the experiment, however I have got a new error
Unfortunately we encountered the following error:

  • when importing condition: instructs.xlsx
  • when getting the value of resource: instructs.xlsx
  • unknown resource

You need to have a blank output path and read this page:

https://psychopy.org/online/resources.html

See also

Thank you I will try this now