Ros Noetic python3 - rqt cannot find plugins
I am doing the tutorials and when I run rqt_graph node this occurs:
rosrun rqt_graph rqt_graph
Error Message:
CompositePluginProvider.discover() could not discover plugins from provider "<class 'rqt_gui.rospkg_plugin_provider.RospkgPluginProvider'>":
Traceback (most recent call last):
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/composite_plugin_provider.py", line 57, in discover
plugin_descriptors = plugin_provider.discover(discovery_data)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/ros_plugin_provider.py", line 67, in discover
plugin_descriptors += self._parse_plugin_xml(package_name, plugin_xml)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/ros_plugin_provider.py", line 128, in _parse_plugin_xml
for library_el in root.getiterator('library'):
AttributeError: 'ElementTree' object has no attribute 'getiterator'
CompositePluginProvider.discover() could not discover plugins from provider "<class 'qt_gui.recursive_plugin_provider.RecursivePluginProvider'>":
Traceback (most recent call last):
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/composite_plugin_provider.py", line 57, in discover
plugin_descriptors = plugin_provider.discover(discovery_data)
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/recursive_plugin_provider.py", line 53, in discover
plugin_descriptors = self._plugin_provider.discover(discovery_data)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/ros_plugin_provider.py", line 67, in discover
plugin_descriptors += self._parse_plugin_xml(package_name, plugin_xml)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/ros_plugin_provider.py", line 128, in _parse_plugin_xml
for library_el in root.getiterator('library'):
AttributeError: 'ElementTree' object has no attribute 'getiterator'
CompositePluginProvider.discover() could not discover plugins from provider "<class 'qt_gui.recursive_plugin_provider.RecursivePluginProvider'>":
Traceback (most recent call last):
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/composite_plugin_provider.py", line 57, in discover
plugin_descriptors = plugin_provider.discover(discovery_data)
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/recursive_plugin_provider.py", line 53, in discover
plugin_descriptors = self._plugin_provider.discover(discovery_data)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/ros_plugin_provider.py", line 67, in discover
plugin_descriptors += self._parse_plugin_xml(package_name, plugin_xml)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/ros_plugin_provider.py", line 128, in _parse_plugin_xml
for library_el in root.getiterator('library'):
AttributeError: 'ElementTree' object has no attribute 'getiterator'
**qt_gui_main() found no plugin matching "rqt_graph.ros_graph.RosGraph"
try passing the option "--force-discover"**
Initially, it couldn't find PySide2 and PyQt5 which I installed via pip3 install.
When running in the terminal:
rqt_graph
there is no problem