paho-mqtt error1: incorrect protocol version解决方法

尝试用百度云作broker进行链接,可是一直链接不上html 打印错误代码是"1", 即“ incorrect protocol version”错误。post 错误代码打印:spa def on_disconnect(client, userdata, rc): print("Disconnect, reason: " + str(rc)) print("Disconnect,
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