I created a Google OAuth 2.0 ClientID and secret in Google Developer console
ClientID
secret
After that I tested in Google OAuth playground (https://developers.google.com/oauthplayground). and registered ClientID and secret already created above and applied to Google OAuth 2.0 playground setting menu.
Some people say that after creating ClientID/secret they need some time for testing. So after two days I tried to test in the same conditions but the error is same redirect_uri_mismatch.
redirect_uri_mismatch
How can I solve this?
As little as having a '/' at the end of your uri and not having the same '/' at the end in your code will throw it off.
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