Certificiate error help please

I set up Trudesk a few days ago and i’ve been using it daily, most of which is great. Though I seen in the logs that there is a self signed certificate error. It appears every minute in the logs and is the same each time:

11-01-2024 08:07:52 [18] error: self signed certificate - Error: self signed certificate
at TLSSocket.onConnectSecure (node:_tls_wrap:1530:34)
at TLSSocket.emit (node:events:526:28)
at TLSSocket._finishInit (node:_tls_wrap:944:8)
at TLSWrap.ssl.onhandshakedone (node:_tls_wrap:725:12)
at Socket.ondata (node:internal/js_stream_socket:77:22)
at Socket.emit (node:events:526:28)
at addChunk (node:internal/streams/readable:315:12)
at readableAddChunk (node:internal/streams/readable:289:9)
at Socket.Readable.push (node:internal/streams/readable:228:10)
at TCP.onStreamRead (node:internal/stream_base_commons:190:23)

Any ideas why this is appearing or where I can find more info on it? I use Caddy as a reverse proxy to access trudesk externally from my network, does this have an effect?