不知道应该怎样解决？大佬求教
报错信息如下：
Traceback (most recent call last):
File "/home/raspberry/Desktop/carspeed.py", line 4, in <module>
from picamera.array import PiRGBArray
File "/usr/lib/python3/dist-packages/picamera/__init__.py", line 72, in <module>
from picamera.exc import (
File "/usr/lib/python3/dist-packages/picamera/exc.py", line 41, in <module>
import picamera.mmal as mmal
File "/usr/lib/python3/dist-packages/picamera/mmal.py", line 49, in <module>
_lib = ct.CDLL('libmmal.so')
File "/usr/lib/python3.9/ctypes/__init__.py", line 374, in __init__
self._handle = _dlopen(self._name, mode)
OSError: libmmal.so: cannot open shared object file: No such file or directory