Method registerSyncCalender is called with wrong number of argumnents.
This results in a none working google calender sync background-job. (Misleading Error in Response from google: Missing API-Key...)
First argument (accessToken) needs to be deleted from the call:
$result = $this->googleCalendarAPIService->registerSyncCalendar($this->userId, $calId, $calName, $color);
https://github.com/MarcelRobitaille/nextcloud_google_synchronization/blob/9cbc79b19c3e53e95b1edd6b137e914985524863/lib/Controller/GoogleAPIController.php#L249
Method registerSyncCalender is called with wrong number of argumnents. This results in a none working google calender sync background-job. (Misleading Error in Response from google: Missing API-Key...)
First argument (accessToken) needs to be deleted from the call: $result = $this->googleCalendarAPIService->registerSyncCalendar($this->userId, $calId, $calName, $color);