I was trying to setup gdrive backup in v16 but it failed upon authorization and got this error. Used to work fine on V15
Anyone had success connecting Gdrive?
When I click Authorize button it is redirecting to: frappe.integrations.google_oauth.callback
After login to Google account and continue, I am getting above error.
Is the call back url: this?offsite_backups.offsite_backups.doctype.google_drive.google_drive.authorize_access
But, why when clicked authorise takes frappe.integrations.google_oauth.callback??
Help, anyone? 
When I click the Authorize button, it redirects to frappe.integrations.google_oauth.callback, and after logging into my Google account and continuing, I encounter the same error.