Importing an event with an attendee using id instead of mailto causes "Missing attendee email" message.

[MLopez-Ibanez]

Describe the problem and steps to reproduce it:

I imported an event from iCloud (ics format) into a Google Calendar

What happened?

The event doesn't show up in Google Calendar (but it does show up in Thunderbird). The console shows:

console.log: Lightning: [calGoogleCalendar] A request Error Occurred. Status Code: 400 Bad Request Body: {
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "required",
    "message": "Missing attendee email."
   }
  ],
  "code": 400,
  "message": "Missing attendee email."
 }
}

console.error: Lightning: 
  [calGoogleCalendar] Adding Item XXXXXXXXXXXXX failed:2147746065: A request Error Occurred. Status Code: 400 Bad Request Body: {
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "required",
    "message": "Missing attendee email."
   }
  ],
  "code": 400,
  "message": "Missing attendee email."
 }
}
console.warn: Lightning: [calCachedCalendar] Unable to perform playback action add to the server, will try again next time (87e1fdf2-4bf4-403d-9b1d-41a8d7afcb4f,A request Error Occurred. Status Code: 400 Bad Request Body: {
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "required",
    "message": "Missing attendee email."
   }
  ],
  "code": 400,
  "message": "Missing attendee email."
 }
}
)

What did you expect to happen?

The event shows in Google Calendar

Anything else we should know?

ICS file attached (after anonymization)
iCal-2020614.ics

Version 68.8.0
Lightning 68.8.0
Provider for Google Calendar 68.2.1

[norsimon]

Similar/same issue here: Importing .ics invites to Lightning makes them show up in Lightning, but not in Google calendar. In spite of associating the event with a specific google calendar after import.

Invite is from iCloud.
Thunderbird: 68.7.0 (64-bit)
OS: Pop!_OS 20.04 LTS

[MLopez-Ibanez]

Probably Google Calendar's API is more strict than Lightning's

[kewisch]

iCloud sometimes have attendees identified by a uid instead of an email. One possible fix would be to attempt to get the EMAIL parameter if the property value is not mailto:.