Installing shadow package doesn't allow /bin/login -f username

[nin187]

I was about to change the default shell from ash to bash for the user which I added, and I realized that chsh doesn't exist on alpine linux.
So I installed shadow package to activate chsh command, and right after that, it made me unable to login except root account.
"/bin/login -f username"(after tapping the settings for 10 seconds) doesn't work anymore.
What can I do for it?