What means this?

[gpezzella]

Hi all of you,
my code work but i would understand what means this log:

----------------------------------
WIFI INFORMATION
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WIFI MAC= A8:03:2A:D6:D0:60
WIFI IP= 192.168.43.144
----------------------------------

[D][HTTPClient.cpp:139] begin(): failed to parse protocol
[E][WiFiGeneric.cpp:654] hostByName(): DNS Failed for
[D][HTTPClient.cpp:1018] connect(): failed connect to :0
[W][HTTPClient.cpp:1318] returnError(): error(-1): connection refused
Connecting to MQTT with ClientID= Tecno_.....
MQTT server started
Publish ok

Thanks