Jibri failing to record, authenticates but then times out

I have a jitsi installation that I am trying use with jibri to make recordings but each time jibri gets so far but then times out. Any thoughts on what might be the cause?

Jitsi is installed according with the stable release on ubuntu 18.04 x64

Jibri I installed from the instructions on the github page on a 2nd machine that is ubuntu 16.04 x64

The URL in the log file that jibri is attempting to connect to appears to be accessible from that machine using wget.

The following is my log from jibri after I press record (real domain changed)

2020-02-25 16:45:58.940 INFO: [19] org.jitsi.xmpp.mucclient.MucClient.log() [MucClient id=my.domain.com hostname=my.domain.com] connected
2020-02-25 16:45:59.032 INFO: [19] org.jitsi.xmpp.mucclient.MucClient.log() Joined MUC: jibribrewery@internal.auth.my.domain.com
2020-02-25 16:46:10.816 INFO: [35] org.jitsi.jibri.api.xmpp.XmppApi.handleJibriIq() Received JibriIq <iq to='jibri@auth.my.domain.com/7684b1b9-96b9-4fd3-a44b-8bcd230a7fb4' from='jibribrewery@internal.auth.my.domain.com/focus' id='amlicmlAYXV0aC5jaHV0ZW91dC5iaXRjaHV0ZS5jb20vNzY4NGIxYjktOTZiOS00ZmQzLWE0NGItOGJjZDIzMGE3ZmI0AHA1ZHVjLTEyNzEA5d/W2H5BYvpR3Q+G7o869w==' type='set'><jibri xmlns='http://jitsi.org/protocol/jibri' action='start' recording_mode='file' room='test123@conference.my.domain.com' session_id='pzlvlhxtxjcyuwen' app_data='{"file_recording_metadata":{"share":true}}'/></iq> from environment [MucClient id=my.domain.com hostname=my.domain.com]
2020-02-25 16:46:10.817 INFO: [35] org.jitsi.jibri.api.xmpp.XmppApi.handleStartJibriIq() Received start request
2020-02-25 16:46:10.819 INFO: [35] org.jitsi.jibri.api.xmpp.XmppApi.handleStartJibriIq() Sending 'pending' response to start IQ
2020-02-25 16:46:10.820 INFO: [36] org.jitsi.jibri.api.xmpp.XmppApi.run() Starting service
2020-02-25 16:46:10.852 INFO: [36] org.jitsi.jibri.api.xmpp.XmppApi.handleStartService() Parsed call url info: CallUrlInfo(baseUrl=https://my.domain.com, callName=test123, urlParams=[])
2020-02-25 16:46:10.853 INFO: [36] org.jitsi.jibri.JibriManager.startFileRecording() Starting a file recording with params: FileRecordingRequestParams(callParams=CallParams(callUrlInfo=CallUrlInfo(baseUrl=https://my.domain.com, callName=test123, urlParams=[])), sessionId=pzlvlhxtxjcyuwen, callLoginParams=XmppCredentials(domain=recorder.my.domain.com, username=recorder, password=recorderauthpass)) finalize script path: /path/to/finalize_recording.sh and recordings directory: /srv/recordings
2020-02-25 16:46:12.090 INFO: [36] org.openqa.selenium.remote.ProtocolHandshake.createSession() Detected dialect: OSS
2020-02-25 16:46:12.110 INFO: [36] org.jitsi.jibri.selenium.JibriSelenium.<init>() Starting empty call check with a timeout of PT30S
2020-02-25 16:46:12.125 FINE: [36] org.jitsi.jibri.capture.ffmpeg.FfmpegCapturer.<init>() Detected os as OS: LINUX
2020-02-25 16:46:12.132 INFO: [36] org.jitsi.jibri.service.impl.FileRecordingJibriService.<init>() Writing recording to /srv/recordings/pzlvlhxtxjcyuwen
2020-02-25 16:46:12.134 FINE: [36] org.jitsi.jibri.statsd.JibriStatsDClient.incrementCounter() Incrementing statsd counter: start:recording
2020-02-25 16:46:12.135 INFO: [36] org.jitsi.jibri.status.JibriStatusManager.log() Busy status has changed: IDLE -> BUSY
2020-02-25 16:46:12.136 INFO: [36] org.jitsi.jibri.api.xmpp.XmppApi.updatePresence() Jibri reports its status is now JibriStatus(busyStatus=BUSY, health=OverallHealth(healthStatus=HEALTHY, details={})), publishing presence to connections
2020-02-25 16:46:12.138 INFO: [36] org.jitsi.xmpp.mucclient.MucClientManager.log() Setting a presence extension: org.jitsi.xmpp.extensions.jibri.JibriStatusPacketExt@72a9ac5a
2020-02-25 16:46:13.079 FINE: [45] org.jitsi.jibri.selenium.pageobjects.CallPage.visit() Visiting url https://my.domain.com/test123#config.iAmRecorder=true&config.externalConnectUrl=null&config.startWithAudioMuted=true&config.startWithVideoMuted=true&interfaceConfig.APP_NAME="Jibri"&config.analytics.disabled=true&config.p2p.enabled=false
2020-02-25 16:46:43.512 SEVERE: [45] org.jitsi.jibri.selenium.pageobjects.CallPage.visit() Timed out waiting for call page to load