When I use Google Calendar APIs calendar.events.delete and calendar.events.update, you do not have permission to execute this method.response 403 Forbidden, but I have given the permission "https://www.googleapis.com/auth /calendar", please help me, thank you.
403 error happens when you are hitting the current quota limit.
As per google support,
Google Calendar puts certain limits in place to protect our users and infrastructure from abusive behavior. When these limits are reached by a user, Google Calendar will go into read-only mode for that user, and all edit actions will fail for a certain period of time. Most users will never hit these limits, as they are well above the activity level of a typical Calendar user.
To help you handle the errors, resolutions have been stated in the documentation.
