Problem with Zigbee2mqtt and the sonoff zigbee dongle version e

[Dujith (Charles Evers)]

@Lukas320

Zigbee2MQTT:info 2023-02-04 19:50:15: Connecting to MQTT server at mqtt://core-mosquitto:1883
Zigbee2MQTT:error 2023-02-04 19:50:16: MQTT error: Connection refused: Not authorized
Zigbee2MQTT:error 2023-02-04 19:50:16: MQTT failed to connect, exiting…
Zigbee2MQTT:info 2023-02-04 19:50:16: Stopping zigbee-herdsman…
Zigbee2MQTT:info 2023-02-04 19:50:16: Stopped zigbee-herdsman

This is your problem. Not the dongle.
How did you set this up. Bit more info required:

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