Whenever I open the library solution, I see this error message, and I am unable to sign in. Which is weird, as you can see in the image that I am currently signed in the top right corner. I have ensured that pop-ups are not blocked from this particular site, and yet I am not seeing any window pop up asking for the sign-in credentials. I also tried deleting and importing the solution again, but that did not work. I also tried "empty cache and hard reload".
Update : When I play the app outside the studio environment, the sign-up window is popping up properly and I am able to sign in and app runs as it should but this still unfortunately did not fix the issue when i run the environment inside the power app studio to edit.