Hi Shruti,
In your screenshot, I do not see the necessary nanoflow commons module. The nanoflow action is part of that module this is probably why you have trouble finding it. If that does not help maybe this post will: https://community.mendix.com/link/space/widgets/questions/113991
Facing the above error . I tried dwnloading the package from tool and also tried to import from main branch . Still it shows same error