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Solution 1:

In top left corner there is a spinner for project selection(see the attached image), if you select some other project from the drop down of spinner the issue most probably will be solved.

You can select back your project from that menu.

It solved my problem

Solution 2:

Please try logging out all other accounts and login only one account then you try it will work. Even I had the same issue now I'm able to do it. If that doesn't help try to login with some other account and try again.

Solution 3:

This is most probably due to dual account access. I had to make sure that I was signed in as the same person (the button next to the minimize button on chrome browser) as the account I was using to login into the developers console to gain access. Hope this helps.

Solution 4:

In Apis enable 'Google Play Developer API'. This error disappeared after that for me. Wierd bug