The email or password you entered is not right for an account.
What to do
Check the email for typos, and that Caps Lock is off.
If you signed up with Google, tap Continue with Google instead. Accounts made with Google have no password until you set one.
Tap Forgot password? to get a reset link by email. It expires after 60 minutes.
After several tries you may see "Too many attempts. Wait a minute and try again." Wait a minute before the next try.