This is an OAuth problem and the synchronization can't work if you can't sign in.
As the error says, you have an "Origin Mismatch".
What are the "Redirect URIs" for your application ID in the APIs console? The URI you are using -- e.g. http://localhost:8080
-- must match exactly, port, HTTP scheme and trailing slash.
You should try to fix this error by checking out existing answers on StackOverflow: https://stackoverflow.com/search?q=error%3A+origin_mIsmatch