How to get all group members' numbers?

[iBobik]

I am trying to list phone numbers of all group members, but listGroups returns null for members I am not connected with, but as an admin I have permission to see them (in the app).

signal-cli -o json -u +1111111111 listGroups -g xxx=
[{"id":"xxx=","name":"xxx","description":"xxx","isMember":true,"isBlocked":false,"messageExpirationTime":2419200,"members":[{"number":null,"uuid":"xxx"},{"number":"+22222222,"uuid":"xxx"},
… 

[AsamK]

You can only get their number, when they send you a direct message. For those users you can use their uuid instead of their number.