{"total":2,"results":[{"code":400,"name":"PARTICIPANT_JOIN_MISSING","methods":["phone.editGroupCallParticipant","phone.joinGroupCallPresentation"],"description":"Trying to enable a presentation, when the user hasn't joined the Video Chat with [phone.joinGroupCall](https://core.telegram.org/method/phone.joinGroupCall)."},{"code":403,"name":"PARTICIPANT_JOIN_MISSING","methods":["phone.joinGroupCallPresentation"],"description":"Trying to enable a presentation, when the user hasn't joined the Video Chat with [phone.joinGroupCall](https://core.telegram.org/method/phone.joinGroupCall)."}],"layer":227}