When I try to call the Google Calendar in PHP it gives me
Fatal error: Uncaught exception 'apiServiceException' with message 'Error calling POST https://www.googleapis.com/calendar/v3/calendars/primary/events?key=ABQIAAAAsxHZhPGSukLbZlUcR7gZFhTVSiE46oDPbAIEWnLSRISr9hykzRT26WAMhnP0hQe-Tk5dj5M8wQHwFQ: (401) Invalid Credentials
I looked at my developper key and it is the same. Is it suppose to be the developper key or something else?