This is still happening @priyanisha007? That is a strange one - I don’t think I’ve seen anyone else have this issue. Do you see anything in the dev tools? The console and the network tabs might be useful. There’s probably a post request in the network tab to /user/user-token that failed for some reason. Do you see that? and what does it say about it?
Have you tried anything? You could try logging out and in again to fCC - or another browser, that might get it working.