Invalid type for variable 'inviter'. Required value type is SendbirdBasicUserInfo and passed type was NoneType

[gmp]

When using the group_channel_api.list_channels method, it seems to fail every time because of this type validation issue. It was previously raised in v1 of the SDK in #11, but seems to be back again with the v2 release.

This appears to be an issue again with v2 of the SDK. I'm getting Invalid type for variable 'inviter'. Required value type is SendbirdBasicUserInfo and passed type was NoneType at ['received_data']['channels'][0]['inviter'] when using the list_channels API

Originally posted by @gmp in #11