Issue with importing OpenCV (ImportError: /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0: undefined symbol: FT_Get_Var_Blend_Coordinates)

[Stormwaker]

I'm getting following issue while running model: import cv2,os The error showing is: ImportError: /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0: undefined symbol: FT_Get_Var_Blend_Coordinates

Steps taken leading to issue:

1. Installed Ubuntu 18.10
2. Installed Anaconda
3. Run "git clone https://github.com/llSourcell/How_to_simulate_a_self_driving_car.git" in terminal.
4. Downloaded Udacity Self-Driving Car Simulator (binary version 1).
5. Run "conda env create -f environments.yml" inside cloned folder.
6. Run "conda activate car-behavioral-cloning"
7. Opened Udacity Self-Driving Car Simulator into autonomous mode.
8. Run "python drive.py model.h5"

After step 8 I've run into issued mentioned above. I've seen 2 similar issues (#32, #35) on this repo, but both were closed by the authors without any explanation about how to fix this issue or what is the cause of it.

Issue can be easily reproduced inside virtual machine with any recent Ubuntu build.

[Stormwaker]

You can bypass this issue by switching few libraries versions inside conda enviroment:

• Harfbuzz 0.9.39
• Glib 2.58.2
• Pango 1.39.0

Might work with some other (newer) versions, but this is what I've found to work.

[fouadBEN]

It is a problem with libharbuzz versioning as @Stormwaker mentioned above. Try this https://askubuntu.com/questions/1130349/importerror-usr-lib-x86-64-linux-gnu-libharfbuzz-so-0-undefined-symbol-ft-ge

[Stormwaker]

It is a problem with libharbuzz versioning as @Stormwaker mentioned above. Try this https://askubuntu.com/questions/1130349/importerror-usr-lib-x86-64-linux-gnu-libharfbuzz-so-0-undefined-symbol-ft-ge

Yeah, I'm the author of that post and the reply xd Just leaving it here If someone had same issue.

[HXB-1997]

不用这么麻烦，pip卸载opencv-python，再pip重装3.*版本opencv就行。我跟你一样的问题，亲测解决