Cannot Configure Chromecast Bridge

Hello All,

I have installed LMS on my qnap server (QNAP TS-230, Realtek RTD1296, 64-bit ARM) with a docker file and mapped the following hosts:container ports:
3483:3483 TCP
3483:3483 UDP
9002:9002 TCP
9000:9000 TCP

And installed the chromecast bridge plugin.

My problem is I can't see the chromecast in the same subnet. (there a.re two: a chromecast and chromecast audio)

The exact error is:
Configuration file missing - create one by clicking "generate" or, if autosave is on, refresh this page

/config/prefs/castbridge.xml remains empty even after clicking "Generate"

I selected "squeeze2cast-arm6hf" as the binary in the configuration page.

I see this in the console log:

!!!!!!!!!!!!!!!!!! ERROR LOADING CONFIG FILE !!!!!!!!!!!!!!!!!!!!!

[18:15:25.936481] Start:1036 Binding to 10.0.3.2 (http:0)
[18:15:38.935015] Stop:1064 stopping squeezelite devices ...
[18:15:38.964455] Stop:1075 stopping Cast devices ...
[18:15:39.072960] main:1268 Starting squeeze2cast version: v1.82.2 (Feb 21 2022 @ 19:01:00)
[18:15:39.073238] main:1276

!!!!!!!!!!!!!!!!!! ERROR LOADING CONFIG FILE !!!!!!!!!!!!!!!!!!!!!

Any ideas on how to enable chromecast audio as a player?
Thanks