Bad gateway 502 on zigbee2mqtt. Can't find my coordinator

Hello everyone. So I’m pretty new to home assistant but I really like to try difficult stuff without looking into it first. Well, it caught on to me. I’ve been trying to get zigbee2mqtt to work for two days now and I don’t know what to do anymore. I followed the instructions to the letter and searched for similar cases to mine but nothing seems to work. Can someone help me please?

I’m running the OS version on an raspberry pi4 and for the zigbee coordinator I bought the Sky Connect. Here is my last log and some screenshots:

[23:16:53] INFO: Preparing to start...
[23:16:53] INFO: Socat not enabled
[23:16:55] INFO: Starting Zigbee2MQTT... Zigbee2MQTT:info  2024-02-25 23:17:01: Logging to console and directory: '/config/zigbee2mqtt/log/2024-02-25.23 17-01' filename: log.txt
Zigbee2MQTT:info  2024-02-25 23:17:01: Starting Zigbee2MQTT version 1.35.3 (commit #unknown)
Zigbee2MQTT:info  2024-02-25 23:17:01: Starting zigbee-herdsman (0.33.8)
Zigbee2MQTT:error 2024-02-25 23:17:02: Error while starting zigbee-herdsman
Zigbee2MQTT:error 2024-02-25 23:17:02: Failed to start zigbee
Zigbee2MQTT:error 2024-02-25 23:17:02: Check https://www.zigbee2mqtt.io/guide/installation/20_zigbee2mqtt-fails-to-start.html for possible solutions
Zigbee2MQTT:error 2024-02-25 23:17:02: Exiting...
Zigbee2MQTT:error 2024-02-25 23:17:02: Error: Error while opening serialport 'Error: Error: No such file or directory, cannot open /dev/ttyUBS0'
    at SerialPort.<anonymous> (/app/node_modules/zigbee-herdsman/src/adapter/serialPort.ts:28:28)
    at SerialPort._error (/app/node_modules/@serialport/stream/dist/index.js:82:22)
    at /app/node_modules/@serialport/stream/dist/index.js:118:18 

My config:


data_path: /config/zigbee2mqtt
socat:
  enabled: false
  master: pty,raw,echo=0,link=/tmp/ttyZ2M,mode=777
  slave: tcp-listen:8485,keepalive,nodelay,reuseaddr,keepidle=1,keepintvl=1,keepcnt=5
  options: "-d -d"
  log: false
mqtt: {}
serial:
  port: /dev/ttyUBS0
zigbee_herdsman_debug: false 

I can’t really see where the problem is, but it seems to me that the program is trying to access the port I provided but can’t find it? Even though I know that it is the correct port as shown on the screenshot. Maybe it’s the sky connect dongle, or maybe I need to change ports, idk.