Move to 'https://calendar.google.com/calendar/u/0/selfsched?sstoken=UUI1NTFuM2pfMGx4fGRlZmF1bHR8MjhmMjJjODBkOWJhNTc4NjgyZGI5NjMzMTNiNmUwMjM' in ten seconds.
Go to the page directly when you click the url.
https://calendar.google.com/calendar/u/0/selfsched?sstoken=UUI1NTFuM2pfMGx4fGRlZmF1bHR8MjhmMjJjODBkOWJhNTc4NjgyZGI5NjMzMTNiNmUwMjM