ubuntu中rqt启动失败

Question

ubuntu中启动rqt突然报出这些信息并且启动失败

Traceback (most recent call last):
  File "/opt/ros/noetic/lib/rqt_graph/rqt_graph", line 8, in <module>
    sys.exit(main.main(sys.argv, standalone='rqt_graph.ros_graph.RosGraph'))
  File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/main.py", line 61, in main
    return super(
  File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/main.py", line 407, in main
    from python_qt_binding import QT_BINDING
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/__init__.py", line 55, in <module>
    from .binding_helper import loadUi, QT_BINDING, QT_BINDING_MODULES, QT_BINDING_VERSION  # @UnusedImport
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/binding_helper.py", line 274, in <module>
    _select_qt_binding(
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/binding_helper.py", line 108, in _select_qt_binding
    QT_BINDING_VERSION = binding_loader(required_modules, optional_modules)
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/binding_helper.py", line 155, in _load_pyqt
    _named_optional_import('PyQt5.%s' % module_name)
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/binding_helper.py", line 142, in _named_optional_import
    _named_import(name)
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/binding_helper.py", line 133, in _named_import
    module = builtins.__import__(name)
ValueError: PyCapsule_GetPointer called with incorrect name

Answer 1

这个错误消息表明在加载PyQt5模块时发生了错误。这可能是由于PyQt5模块的安装不完整或者损坏导致的。

可以尝试运行以下命令来修复安装的PyQt5模块：

sudo apt-get update
sudo apt-get install --reinstall python3-pyqt5

如果这个问题仍然存在，您还可以尝试重新安装rqt工具包：

sudo apt-get update
sudo apt-get install --reinstall ros-noetic-rqt

如果上述解决方案都不起作用，则可以考虑清理系统中的旧版本PyQt5