Movie not showing for simulated data

[kfeng19]

I was following the instruction to test with the _sliderdepth.bag file. However, in the last step when I launch the renderer, I don't see the movie but only the message: "publish image from callback".

I also see this error message at the beginning:

Traceback (most recent call last):
  File "/opt/ros/noetic/lib/rqt_image_view/rqt_image_view", line 13, in <module>
    sys.exit(main.main(
  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 118, in _select_qt_binding
    raise ImportError(
ImportError: Could not find Qt binding (looked for: 'pyqt', 'pyside'):
  ImportError for 'pyqt': libQt5Core.so.5: cannot open shared object file: No such file or directory
Traceback (most recent call last):
  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 153, in _load_pyqt
    _named_import('PyQt5.%s' % module_name)
  File "/opt/ros/noetic/lib/python3/dist-packages/python_qt_binding/binding_helper.py", line 133, in _named_import
    module = builtins.__import__(name)
ImportError: libQt5Core.so.5: cannot open shared object file: No such file or directory

However, I verified that I have PyQt5 installed and I can import it in Python.