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404 on the "waiting-participants" API when joining a room #1434

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@dawagner

Topic

Issue when entering a meeting

Question

I have deployed meet using docker-compose. I followed the docs (and may contribute some improvements because some details are missing) and managed to get the basics running but I'm unable to get into a meeting properly. It seems related to the fact that, at some point, my browser makes a request to /api/v1.0/rooms//waiting-participants/ (i.e. the room-id is missing) ; it obviously results in 404.

I have nothing helpful in the backend's or the frontend's logs but, after that, I have the following in livekit's logs:

livekit-1     | 2026-06-22T16:08:41.007Z        INFO    livekit service/roomallocator.go:166    selected node for room  {"room": "aaa-bbbb-ccc", "selectedNodeID": "ND_ardmoBBLDwJk"}
livekit-1     | 2026-06-22T16:08:41.009Z        INFO    livekit service/roommanager.go:419      starting RTC session    {"room": "aaa-bbbb-ccc", "roomID": "RM_i4v4pJLnQe2w", "participant": "None", "participantID": "PA_4eWj5W5dgs7N", "remote": false, "room": "aaa-bbbb-ccc", "nodeID": "ND_ardmoBBLDwJk", "numParticipants": 0, "participantInit": {"Identity": "None", "Reconnect": false, "ReconnectReason": "RR_UNKNOWN", "AutoSubscribe": true, "AutoSubscribeDataTrack": false, "Client": {"sdk": "JS", "version": "2.19.0", "protocol": 17, "os": "Ubuntu", "deviceModel": "Other", "browser": "Firefox", "browserVersion": "151.0", "clientProtocol": 1}, "Grants": {"Identity": "None", "Kind": "", "KindDetails": [], "Video": {"RoomCreate": false, "RoomList": false, "RoomRecord": false, "RoomAdmin": false, "RoomJoin": true, "Room": "aaa-bbbb-ccc", "CanPublish": true, "CanSubscribe": true, "CanPublishData": true, "CanPublishSources": ["camera", "microphone", "screen_share", "screen_share_audio"], "CanUpdateOwnMetadata": false, "IngressAdmin": false, "Hidden": false, "Recorder": false, "Agent": false, "CanSubscribeMetrics": "not-set", "CanManageAgentSession": "not-set", "DestinationRoom": ""}, "SIP": {}, "Agent": {}, "Inference": {}, "Observability": {}, "RoomConfig": {}, "RoomPreset": ""}, "Region": "", "AdaptiveStream": true, "ID": "", "SubscriberAllowPause": false, "DisableICELite": false, "CreateRoom": {"name": "aaa-bbbb-ccc"}, "AddTrackRequests": [], "PublisherOffer": {"type": "offer", "sdp": "...", "id": 1}, "SyncState": {}, "UseSinglePeerConnection": true}}

Thanks if you're able to help!

edit: the "unable to get into a meeting" part was due to an iptables issue (I had a rule blocking traffic from internet to docker networks even if the port is allowed in general), sorry for the noise...

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