What do these WARNING mean

What do these warning mean, the call is running fine and users can connect (have video and audio from all users)

With 2 clients
WARNING: [14] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with e167b68896a6ad85 not ready yet.
WARNING: [14] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
WARNING: [2170] org.ice4j.ice.Agent.log() Agent contains no IceMediaStream with name stream!

With 3 clients
WARNING: [5320] org.jitsi.videobridge.AbstractEndpointMessageTransport.log() Unable to find endpoint c31efac3 to send EndpointMessage
WARNING: [1324] org.jitsi.impl.neomedia.rtp.TransportCCEngine.log() Not sending transport-cc feedback, delta or packetcount too big.
WARNING: [1305] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Not sending an FIR because the stream RTP manager is null.
WARNING: [5330] org.jitsi.impl.neomedia.transform.dtls.DatagramTransportImpl.log() Unknown DTLS handshake message type: -22
WARNING: [19] org.jitsi.videobridge.VideoChannel.log() Canceling an existing delayed FIR task for endpoint d3b893db.
WARNING: [1306] org.jitsi.impl.neomedia.rtp.TransportCCEngine.log() Not sending transport-cc feedback, delta or packetcount too big.
SEVERE: [5802] org.ice4j.socket.MergingDatagramSocket.log() Cannot find socket to remove.
WARNING: [5208] org.jitsi.impl.neomedia.transform.dtls.DtlsPacketTransformer.log() Dropping a DTLS packet. This DtlsPacketTransformer has not been started successfully or has been closed.
WARNING: [1270] org.jitsi.videobridge.cc.BandwidthProbing.log() Failed to retransmit a packet.
WARNING: [5327] org.ice4j.socket.MergingDatagramSocket.log() Removing the active socket. Won’t be able to send until a new one is elected.

just updated to the 2020-03-27 update and these warning messages are no longer popping up