Exception in thread Thread-9: Traceback (most recent call last): File "C:\ProgramData\Anaconda3\lib\threading.py", line 973, in _bootstrap_inner self.run() File "C:\ProgramData\Anaconda3\lib\threading.py", line 910, in run self._target(*self._args, **self._kwargs) File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 3591, in _thread_main self.loop_forever(retry_first_connection=True) File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 1756, in loop_forever rc = self._loop(timeout) File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 1164, in _loop rc = self.loop_read() File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 1556, in loop_read rc = self._packet_read() File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 2439, in _packet_read rc = self._packet_handle() File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 3033, in _packet_handle return self._handle_publish() File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 3327, in _handle_publish self._handle_on_message(message) File "C:\ProgramData\Anaconda3\lib\site-packages\paho\mqtt\client.py", line 3570, in _handle_on_message on_message(self, self._userdata, message) File "F:\2022-2023（秋）课程\大三下\物联网开发\实验七\7.py", line 40, in on_message msgstr=msg.payload.decode('utf-8') UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa1 in position 1: invalid start byte /device01/control b'{\xa1\xb0status": 1}'

这段错误信息是关于Python中Paho MQTT客户端的一个异常。具体来说，它指出在处理MQTT消息时出现了UnicodeDecodeError，因为无法将字节串转换为UTF-8编码的字符串。可能是消息的编码不是UTF-8，或者在解码消息时发生了一些错误。需要检查代码中对消息进行解码的部分，确保正确地指定了消息的编码。