"Sign in" issue after OREO update (Resolved now)

[Greninja]

I am unable to sign in to my samsung account after the oreo update. Every single time i try to sign in an error message, "Samsung account already exists  in account manager" is being displayed. Please resolve this issue ASAP

[Greninja]

Guys.. I was finally able to resolve the issue.. Go to your settings -> accounts -> select samsung account -> remove account.
Now sign in to your Samsung account from the galaxy apps and voila it worked.. Thank you all for your valuable comments..! 😊