CORS issue with google auth

[epot]

My project was previously working, but I am getting a CORS error when the pop up closes and the browser tries to redirect me to google:

Access to XMLHttpRequest at 'https://accounts.google.com/o/oauth2/auth?scope=profile+email&client_id=dfgdfgdfgl.apps.googleusercontent.com&response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A4200%2Foauth2' 
(redirected from 'http://localhost:4200/api/authenticate/google') from origin 'http://localhost:4200' has been blocked by CORS policy: 
Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

This was working before, do I need to change anything in the client side?