Failed to select initial bridge

Hi, can someone know how to fix error Failed to select initial bridge for participantRegion=null. I got below error when there is someone try to join to a conference.

[conference.js] <te._onConferenceFailed>: CONFERENCE FAILED: conference.videobridgeNotAvailable

and here is jicofo log:

INFO: Chat room event PresenceUpdated member=ChatMember[demo@conference.jitsi.example.com/2c925c57, jid: 2c925c57-df57-4802-824d-575e3821d0e3@jitsi.example.com/4cb564c9-910c-4975-96ba-a0272b25cb59]@227468895
Mar 08, 2021 5:14:34 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Chat room event PresenceUpdated member=ChatMember[demo@conference.jitsi.example.com/2c925c57, jid: 2c925c57-df57-4802-824d-575e3821d0e3@jitsi.example.com/4cb564c9-910c-4975-96ba-a0272b25cb59]@227468895
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Focus request for room: demo@conference.jitsi.example.com
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Chat room event Joined member=ChatMember[demo@conference.jitsi.example.com/b53aa4a2, jid: null]@1633834734
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Member joined:b53aa4a2
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
WARNING: Failed to select initial bridge for participantRegion=null
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
SEVERE: Can not invite participant, no bridge available: 2c925c57
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
SEVERE: Failed to select a bridge for Participant[demo@conference.jitsi.example.com/2c925c57]@1813526233
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
WARNING: Failed to select initial bridge for participantRegion=null
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
SEVERE: Can not invite participant, no bridge available: b53aa4a2
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
SEVERE: Failed to select a bridge for Participant[demo@conference.jitsi.example.com/b53aa4a2]@1825310188
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Chat room event PresenceUpdated member=ChatMember[demo@conference.jitsi.example.com/b53aa4a2, jid: null]@1633834734
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Chat room event Left member=ChatMember[demo@conference.jitsi.example.com/2c925c57, jid: 2c925c57-df57-4802-824d-575e3821d0e3@jitsi.example.com/4cb564c9-910c-4975-96ba-a0272b25cb59]@227468895
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Owner has left the room !
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Granted owner to b53aa4a2
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Member left:2c925c57
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Terminating 2c925c57, reason: gone, send session-terminate: false
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Removed participant 2c925c57 removed=true
Mar 08, 2021 5:14:37 PM org.jitsi.utils.logging2.LoggerImpl log
INFO: Scheduled single person timeout.

Here is my prosody configuration and I guess it was correct.

Component "jitsi-videobridge.jitsi.example.com"
        component_secret = "demo2020!"
Component "focus.jitsi.example.com" "client_proxy"
        target_address = "focus@auth.jitsi.example.com"
Component "internal.auth.jitsi.example.com" "muc"
        storage = "memory"
        modules_enabled = {
                "ping";
        }
        admins = { "focus@auth.jitsi.example.com", "jvb@auth.jitsi.example.com" }

Thanks!

Not sure where you got this, but the bridge no longer uses components.