Video Bridges No Longer Connecting to Jitsi

I’ve created several video bridge instances and they are no longer able to connect to the jitsi server.

I’m seeing this in /var/logs/jitsi/jvb.log:

2021-03-17 23:16:00.653 WARNING: [15] [hostname=10.10.30.32 id=shard] 
MucClient.lambda$getConnectAndLoginCallable$7#588: [MucClient id=shard hostname=10.10.30.32] error connecting
org.jivesoftware.smack.XMPPException$StreamErrorException: host-unknown You can read more 
about the meaning of this stream error at http://xmpp.org/rfcs/rfc6120.html#streams-error-conditions
<stream:error><host-unknown xmlns='urn:ietf:params:xml:ns:xmpp-streams'/><text>This server does not serve auth.jisti501.mydomain.com</text></stream:error>
    at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.parsePackets(XMPPTCPConnection.java:1059)
    at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.access$300(XMPPTCPConnection.java:1000)
    at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader$1.run(XMPPTCPConnection.java:1016)
    at java.base/java.lang.Thread.run(Thread.java:832)

The jitsi server is working with its videobridge service running on the same box.

Were they connecting fine before? You were able to host 3-party calls on each bridge successfully?

Yes, they were working before. I tested by turning off the various video bridges and turning them on one at a time. I did notice this today in my prosody logs on my jitsi server. Perhaps it is related:

Error binding encrypted port for https: No certificate present in SSL/TLS configuration for https port 5281