Janus configuration

Things seem to be working, but in my syslog I get these errors, can anyone suggest how I resolve them?

Feb 16 15:25:09 nxc signaling[1358]: janus_client.go:383: Error sending ping to MCU: write tcp 127.0.0.1:34662->127.0.0.1:8188: i/o timeout
Feb 16 15:25:09 nxc signaling[1358]: mcu_janus.go:422: Could not send keepalive request write tcp 127.0.0.1:34662->127.0.0.1:8188: i/o timeout

Nextcloud version _23.0.0
Operating system and version: Ubuntu 20.04.3 LTS
Apache or nginx version: nginx-full 1.18.0-0ubuntu1.2
PHP version (eg, 7.4): PHP 8.0.15

Perhaps Janus does not run. Post:
service janus status

Thanks devnull, it is running

$ sudo service janus status
● janus.service - Janus WebRTC gateway
     Loaded: loaded (/lib/systemd/system/janus.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2022-02-08 18:49:37 AEDT; 1 weeks 1 days ago
       Docs: https://janus.conf.meetecho.com/docs/index.html
   Main PID: 1326 (janus)
      Tasks: 33 (limit: 4677)
     Memory: 10.6M
     CGroup: /system.slice/janus.service
             └─1326 /usr/bin/janus --disable-colors --daemon --log-stdout

Feb 15 16:30:08 nxc janus[1326]: [ERR] [janus.c:janus_process_incoming_request:1132] Couldn't find any session 3513812874748388...
Feb 15 16:30:08 nxc janus[1326]: [ERR] [janus.c:janus_process_incoming_request:1132] Couldn't find any session 3513812874748388...
Feb 15 16:30:08 nxc janus[1326]: [WSS-0x7f9ef8013700] Destroying WebSocket client
Feb 15 16:30:08 nxc janus[1326]: Creating new session: 387613372573886; 0x7f9f040034b0
Feb 15 16:30:08 nxc janus[1326]: Creating new handle in session 387613372573886: 3979067147416090; 0x7f9f040034b0 0x7f9f040589f0
Feb 15 16:38:16 nxc janus[1326]: Timeout expired for session 387613372573886...
Feb 15 16:38:16 nxc janus[1326]: Detaching handle from JANUS VideoRoom plugin; 0x7f9f040589f0 0x7f9f04003440 0x7f9f040589f0 0x7f9f0402c7a0
Feb 15 16:38:16 nxc janus[1326]: [janus.plugin.videoroom-0x7f9f04003440] No WebRTC media anymore; 0x7f9f040589f0 0x7f9f0402c7a0
Feb 15 16:38:16 nxc janus[1326]: [3979067147416090] Handle and related resources freed; 0x7f9f040589f0 0x7f9f040034b0
Feb 15 16:38:16 nxc janus[1326]: Destroying session 387613372573886; 0x7f9f040034b0

I run csf firewall but given its local interface it shouldn’t have an issue, but not sure how to diagnose.

Okay rather embarrassing but I just needed to restart the janus service. This is all new to me, thanks devnull!