The same does not occur in our app. The error should not appear in the first place.
There is currently 1 question, can add another question in the quiz and check it.
The API hit seems to be sending a progress value of 0 as well. https://prnt.sc/qzm1zt
to test same, you can get the authoriation token of users logged into your app from WP admin – LMS – Settings – API – Connected clients.