Here by visiting the link:
https://convin-task.codepath.repl.co you can access the server
To get propt screen to auth in google account go to url
https://convin-task.codepath.repl.co/rest/v1/calendar/init/
It will after authentication redirect you to
https://convin-task.codepath.repl.co/rest/v1/calendar/redirect/
where you can see the events related to that user in his/her google calendar