Hi @hello11,
Welcome to the Auth0 Community!
You are getting this error because of the localhost domain.
This is from our docs:
The
login_urlshould point to a route in the application that ends up redirecting to Auth0’s/authorizeendpoint, e.g.https://mycompany.org/login. Note that it requireshttpsand it cannot point tolocalhost.login_urlcan include query parameters and a URI fragment.
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