Error installing cfclient

[cweekiat]

Hi, I followed the installation instructions for crazyflie cfclient and followed the steps as per the docs. (link). I received the following error.

INFO:__main__:Disabling STL printouts
Traceback (most recent call last):
  File "/home/me/anaconda3/envs/cf/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/home/me/anaconda3/envs/cf/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/me/anaconda3/envs/cf/lib/python3.9/site-packages/cfclient/gui.py", line 194, in <module>
    main()
  File "/home/me/anaconda3/envs/cf/lib/python3.9/site-packages/cfclient/gui.py", line 162, in main
    from .ui.main import MainUI
  File "/home/me/anaconda3/envs/cf/lib/python3.9/site-packages/cfclient/ui/main.py", line 35, in <module>
    from cfclient.ui.tab_toolbox import TabToolbox
  File "/home/me/anaconda3/envs/cf/lib/python3.9/site-packages/cfclient/ui/tab_toolbox.py", line 34, in <module>
    from PyQt6 import QtWidgets
ImportError: /home/me/anaconda3/envs/cf/lib/python3.9/site-packages/PyQt6/QtCore.abi3.so: undefined symbol: _ZN14QReadWriteLock16destroyRecursiveEP21QReadWriteLockPrivate, version Qt_6_PRIVATE_API

I have tried installing sudo apt-get install libxcb-cursor0.
I am running on ubuntu 20.04, python 3.9 in a conda env. Please let me know how to resolve this.

[knmcguire]

Ah that is not the error that you see when you are missing libxcb-cursor0. Seems like you are still missing a package but unclear which one.

In these instructions that you gave, there is this note:

For some versions of Ubuntu 20.04 you might need to install more packes like libxcb-cursor0. Check out QT6 package dependency list.
Have you tried looking at your installed package list to see if these are all properly updated? You can also do a sudo apt-get update to do that as well.

[knmcguire]

Just FYI, someone has noticed this on the bitcrazeVM as well bitcraze/crazyflie-clients-python#689

[knmcguire]

Fyi someone figured out what is potentially wrong. Check out this ticket: bitcraze/crazyflie-clients-python#690

[cweekiat]

This solved the issues!