Login Failure Attempts

Authenticating failed due to the following error: We already have a registered user with this email address. Log in to connect your GitHub account. this the error what is the solution?

Authenticating failed due to the following error: bad_verification_code: The code passed is incorrect or expired. error=bad_verification_code&error_description=The+code+passed+is+incorrect+or+expired.&error_uri=https%3A%2F%2Fdocs.github.com%2Fapps%2Fmanaging-oauth-apps%2Ftroubleshooting-oauth-app-access-token-request-errors%2F%23bad-verification-code

Anyone please help, I cant login

Duplicate: I kept getting errors when I try to login my github account - Admin - Netlify Support Forums