python - Ubuntu python Qt导入失败

Question

我无法在 Ubuntu 20.04 上启动 git-cola。作为故障排除练习，我这样做了：

darnstein@EXTP346360104:Downloads$ python3
Python 3.8.10 (default, Sep 28 2021, 16:10:42)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from PyQt5.QtWidgets import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /usr/lib/python3/dist-packages/PyQt5/QtWidgets.cpython-38-x86_64-linux-gnu.so: undefined symbol: _ZTI13QOpenGLWidget, version Qt_5

我应该怎么做才能解决未定义的符号？我已经安装了 python3-qt5 python3-pyqt5 包。