[Home](./index.md) > [@firebase/auth](./auth.md) > [GithubAuthProvider](./auth.githubauthprovider.md) > [credentialFromError](./auth.githubauthprovider.credentialfromerror.md) ## GithubAuthProvider.credentialFromError() method Used to extract the underlying [OAuthCredential](./auth.oauthcredential.md) from a [AuthError](./auth.autherror.md) which was thrown during a sign-in, link, or reauthenticate operation. Signature: ```typescript static credentialFromError(error: FirebaseError): OAuthCredential | null; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | error | FirebaseError | | Returns: [OAuthCredential](./auth.oauthcredential.md) \| null