I am trying to load Google Picker.
I am using this npm package https://www.npmjs.com/package/google-picker
When loading the picker, the auth windows show up, and I can select my Google account.
After auth is done, it tries to open the Google Picker iframe.
It is at this point the iframe fails to load and I get the error
Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('https://docs.google.com') does not match the recipient window's origin
I have searched this issue and many solutions say make sure to add your domain to the authorized JS origins in google console
I have done this! The domain is definitely in the authorized domains for the client. Google sign in works with my app.. but I just can't seem to get the Picker to work.
I have tried both running from localhost and uploading to the server. But I get the same error.
The server I am using is HTTPS. And the iframe URL for picker is HTTPS too. So this should not be a problem.
What else can I try? I am out of options. I am following the API exactly. I have put in all the right keys.