Msg="gateway/mqtt: connecting to mqtt broker failed, will retry in 2s: network Error

I am trying to start the network server service. but in the integration with the MQTT broker it throws me the following error:

Can you help me? Thank

You can solve it now, it was necessary to write directly the local IP address. Because with the reserved word it marks error.

This mistake made me sad, This error made me sad, because I couldn’t find anything about it