See screenshot. The screenshot has a mix of my rating from the website and from the mobile app. I am not entirely sure, but I guess that ratings from the mobile app lead to duration=0. @tchaumeny I think you would be able to tell. If this is true, then the mobile app also wrongly generate the NaN values. We should find the source and fix it.

See screenshot. The screenshot has a mix of my rating from the website and from the mobile app. I am not entirely sure, but I guess that ratings from the mobile app lead to duration=0. @tchaumeny I think you would be able to tell. If this is true, then the mobile app also wrongly generate the NaN values. We should find the source and fix it.