I suspect that introduces a bug which breaks the WebApp and does not allow a user to sign in.
Check out the latest master branch on WebApp repo
Try to login into any account
Able to login without error
Not able to login no matter what account you use and the error Please enter your password is displayed.
I'm not sure what the possible fix would be but I suspect that introduces the bug. Checking out any commit before this will fix the problem.
Please confirm that email/password login works and that some other textboxes with placeholders in the app work correctly.