The server does not support the version of the MQTT protocol requested by the client. Sent in a CONNACK packet when the client's protocol level field is not recognised by the server.
Numeric value: 132
UnsupportedProtocolVersion
mqtt The server does not support the version of the MQTT protocol requested by the client. Sent in a CONNACK packet when the client's protocol level field is not recognised by the server.
Numeric value: 132