Hailo python package not found

I am running the hailo-rpi5-examples, there is an error when ./install.sh.

(venv_hailo_rpi5_examples) pi@raspberrypi:~/Desktop/Prj_demo/hailo-rpi5-examples $ ./install.sh
Sourcing environment variables and activating virtual environment…
Setting up the environment…
Setting up the environment for hailo-tappas-core…
TAPPAS_VERSION is 3.31.0. Proceeding…
You are in the venv_hailo_rpi5_examples virtual environment.
TAPPAS_POST_PROC_DIR set to /usr/lib/aarch64-linux-gnu/hailo/tappas/post_processes
DEVICE_ARCHITECTURE is set to: HAILO8L
Installing additional system dependencies…
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
rapidjson-dev is already the newest version (1.1.0+dfsg2-7.1).
The following packages were automatically installed and are no longer required:
libcamera0.3 libwlroots12
Use ‘sudo apt autoremove’ to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Installing required Python dependencies…
Looking in indexes: Simple index, piwheels - Simple index
Collecting git+https://github.com/hailo-ai/hailo-apps-infra.git (from -r requirements.txt (line 4))
Cloning GitHub - hailo-ai/hailo-apps-infra to /tmp/pip-req-build-q08vbp34
Running command git clone --filter=blob:none --quiet GitHub - hailo-ai/hailo-apps-infra /tmp/pip-req-build-q08vbp34
Resolved GitHub - hailo-ai/hailo-apps-infra to commit 2053e2b8021c14c20a7273d1b936bff5e751d59b
Preparing metadata (setup.py) … error
error: subprocess-exited-with-error

脳 python setup.py egg_info did not run successfully.
鈹?exit code: 1
鈺扳攢> [1 lines of output]
ERROR:main:Hailo python package not found. Please make sure you’re in the Hailo virtual environment. Run ‘source setup_env.sh’ and try again.
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

脳 Encountered error while generating package metadata.
鈺扳攢> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Hey @Qiang_Fu

I’m pleased to inform you that we’ve released Hailo Package version 4.20 with all previous bugs resolved. You can now update to the latest version, and everything should work smoothly.

Thank you for your patience while we addressed these issues.

Best regards,
Omria