Issue joining specific room

Hello,
we have a room called “elearning” where no user can connect to.
in jicofo log there is not authorized error logged but in jvb there is a already authorized error logged.
what can we do to cleanup this specific room? other rooms working like they should. We use shibboleth for authentication.

jvb log:

INFORMATION: [19] Videobridge.createConference#326: create_conf, id=fc70077583888ce1 gid=null logging=false
INFORMATION: [19] Health.doRun#294: Performed a successful health check in 2ms. Sticky failure: false
INFORMATION: [23] [hostname=jitsimeet.mydomain.tld id=shard] MucClient.lambda$getConnectAndLoginCallable$7#648: Logging in.
SCHWERWIEGEND: [23] RetryStrategy$TaskRunner.run#198: org.jivesoftware.smack.SmackException$AlreadyLoggedInException: Client is already logged in org.jivesoftware.smack.SmackException$AlreadyLoggedInException: Client is already logged in
   at org.jivesoftware.smack.tcp.XMPPTCPConnection.throwAlreadyLoggedInExceptionIfAppropriate(XMPPTCPConnection.java:371)
   at org.jivesoftware.smack.AbstractXMPPConnection.login(AbstractXMPPConnection.java:487)
   at org.jivesoftware.smack.AbstractXMPPConnection.login(AbstractXMPPConnection.java:448)
   at org.jitsi.xmpp.mucclient.MucClient.lambda$getConnectAndLoginCallable$7(MucClient.java:649)
   at org.jitsi.retry.RetryStrategy$TaskRunner.run(RetryStrategy.java:193)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   at java.lang.Thread.run(Thread.java:748)
INFORMATION: [23] [hostname=jitsimeet.mydomain.tld id=shard] MucClient.lambda$getConnectAndLoginCallable$7#648: Logging in.
SCHWERWIEGEND: [23] RetryStrategy$TaskRunner.run#198: org.jivesoftware.smack.SmackException$AlreadyLoggedInException: Client is already logged in

jicofo.log:

Jicofo INFORMATION: [55] org.jitsi.jicofo.xmpp.FocusComponent.handleConferenceIq().401 Focus request for room: elearning@conference.jitsimeet.mydomain.tld
Jicofo INFORMATION: [55] org.jitsi.jicofo.auth.AbstractAuthAuthority.log() Authenticated jid: 174e22d4-b649-4e24-9559-4065167c1e4e@jitsimeet.mydomain.tld/20ea506b-4c65-457d-8cfc-1bbe3c23af24 with session: AuthSession[ID=<username>@mz.mydomain.tld, JID=174e22d3-b649-4e24-9559-4065167c1e4e@jitsimeet.mydomain.tld/20ea506b-4c65-457d-8cfc-1bbe3c23af24, SID=f5c0dc35-4157-481d-bf9d-6067051dddb7, MUID=20d50002a92be974e18e1ad02c8404c8, LIFE_TM_SEC=9, R=elearning@conference.jitsimeet.mydomain.tld]@644700245
Jicofo INFORMATION: [55] org.jitsi.jicofo.auth.AbstractAuthAuthority.log() Jid 174e22d3-b649-4e24-9559-4065167c1e4e@jitsimeet.mydomain.tld/20ea506b-4c65-457d-8cfc-1bbe3c23af24 authenticated as: <username>@mz.mydomain.tld
Jicofo INFORMATION: [55] org.jitsi.jicofo.FocusManager.log() Created new focus for elearning@conference.jitsimeet.mydomain.tld@auth.jitsimeet.mydomain.tld. Conference count 5,options:
Jicofo INFORMATION: [55] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Lip-sync enabled in elearning@conference.jitsimeet.mydomain.tld
Jicofo INFORMATION: [55] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Joining the room: elearning@conference.jitsimeet.mydomain.tld
Jicofo WARNUNG: [30] org.jitsi.impl.protocol.xmpp.ChatRoomImpl.log() Unable to handle packet: <presence to='focus@auth.jitsimeet.mydomain.tld/focus72314348900950' from='elearning@conference.jitsimeet.mydomain.tld/focus' id='5t9F9-763730' type='error'><xxmlns='http://jabber.org/protocol/muc' xmlns:stream='http://etherx.jabber.org/streams'></x><error type='auth'><not-authorized xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/></error></presence>
Jicofo INFORMATION: [55] org.jitsi.jicofo.FocusManager.log() Disposed conference for room: elearning@conference.jitsimeet.mydomain.tld conference count: 4
Jicofo WARNUNG: [55] org.jitsi.jicofo.xmpp.FocusComponent.processIQ() (serving component 'Jitsi Meet Focus') Unexpected exception while processing IQ stanza: <iq type="set" to="focus.jitsimeet.mydomain.tld" from="174e22d3-b649-4e24-9559-4065167c1e4e@jitsimeet.mydomain.tld/20ea506b-4c65-457d-8cfc-1bbe3c23af24" id="72f8b3a8-ee09-4cfc-a71d-7cea083ecf27:sendIQ"><conference xmlns="http://jitsi.org/protocol/focus" room="elearning@conference.jitsimeet.mydomain.tld" machine-uid="20d50002a92be974e18e1ad02c8404c8" session-id="f5c0dc35-4157-481d-bf9d-6067051dddb7"><property value="-1" name="channelLastN"/><property value="false" name="disableRtx"/><property value="true" name="enableLipSync"/><property value="true" name="openSctp"/><property value="5" name="startAudioMuted"/><property value="4" name="startVideoMuted"/></conference></iq>
net.java.sip.communicator.service.protocol.OperationFailedException: Failed to join the room
        at org.jitsi.impl.protocol.xmpp.ChatRoomImpl.joinAs(ChatRoomImpl.java:298)
        at org.jitsi.impl.protocol.xmpp.ChatRoomImpl.join(ChatRoomImpl.java:209)
        at org.jitsi.jicofo.JitsiMeetConferenceImpl.joinTheRoom(JitsiMeetConferenceImpl.java:578)
        at org.jitsi.jicofo.JitsiMeetConferenceImpl.start(JitsiMeetConferenceImpl.java:399)
        at org.jitsi.jicofo.FocusManager.conferenceRequest(FocusManager.java:446)
        at org.jitsi.jicofo.FocusManager.conferenceRequest(FocusManager.java:395)
        at org.jitsi.jicofo.FocusManager.conferenceRequest(FocusManager.java:370)
        at org.jitsi.jicofo.xmpp.FocusComponent.handleConferenceIq(FocusComponent.java:421)
        at org.jitsi.jicofo.xmpp.FocusComponent.handleIQSetImpl(FocusComponent.java:259)
        at org.jitsi.xmpp.component.ComponentBase.handleIQSet(ComponentBase.java:362)
        at org.xmpp.component.AbstractComponent.processIQRequest(AbstractComponent.java:515)
        at org.xmpp.component.AbstractComponent.processIQ(AbstractComponent.java:289)
        at org.xmpp.component.AbstractComponent.processQueuedPacket(AbstractComponent.java:239)
        at org.xmpp.component.AbstractComponent.access$100(AbstractComponent.java:81)
        at org.xmpp.component.AbstractComponent$PacketProcessor.run(AbstractComponent.java:1051)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.jivesoftware.smack.XMPPException$XMPPErrorException: XMPP error reply received from elearning@conference.jitsimeet.mydomain.tld/focus: XMPPError: not-authorized - auth
        at org.jivesoftware.smack.XMPPException$XMPPErrorException.ifHasErrorThenThrow(XMPPException.java:132)
        at org.jivesoftware.smack.StanzaCollector.nextResultOrThrow(StanzaCollector.java:263)
        at org.jivesoftware.smackx.muc.MultiUserChat.enter(MultiUserChat.java:355)
        at org.jivesoftware.smackx.muc.MultiUserChat.createOrJoin(MultiUserChat.java:498)
        at org.jivesoftware.smackx.muc.MultiUserChat.createOrJoin(MultiUserChat.java:444)
        at org.jitsi.impl.protocol.xmpp.ChatRoomImpl.joinAs(ChatRoomImpl.java:240)
        ... 17 more

Thanks!