WebUi crash before Python is too recent

➜  stable_diffusion ./webui.sh

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Install script for stable-diffusion + Web UI
Tested on Debian 11 (Bullseye), Fedora 34+ and openSUSE Leap 15.4 or newer.
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Running on laurent user
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Create and activate python venv
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Launching launch.py...
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glibc version is 2.39
Check TCMalloc: libtcmalloc_minimal.so.4
libtcmalloc_minimal.so.4 is linked with libc.so,execute LD_PRELOAD=/lib/x86_64-linux-gnu/libtcmalloc_minimal.so.4
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INCOMPATIBLE PYTHON VERSION

This program is tested with 3.10.6 Python, but you have 3.12.3.
If you encounter an error with "RuntimeError: Couldn't install torch." message,
or any other error regarding unsuccessful package (library) installation,
please downgrade (or upgrade) to the latest version of 3.10 Python
and delete current Python and "venv" folder in WebUI's directory.

You can download 3.10 Python from here: https://www.python.org/downloads/release/python-3106/



Use --skip-python-version-check to suppress this warning.
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Python 3.12.3 (main, Feb  4 2025, 14:48:35) [GCC 13.3.0]
Version: v1.10.1
Commit hash: 82a973c04367123ae98bd9abdf80d9eda9b910e2
Installing torch and torchvision
Looking in indexes: https://pypi.org/simple, https://download.pytorch.org/whl/cu121
ERROR: Could not find a version that satisfies the requirement torch==2.1.2 (from versions: 2.2.0, 2.2.0+cu121, 2.2.1, 2.2.1+cu121, 2.2.2, 2.2.2+cu121, 2.3.0, 2.3.0+cu121, 2.3.1, 2.3.1+cu121, 2.4.0, 2.4.0+cu121, 2.4.1, 2.4.1+cu121, 2.5.0, 2.5.0+cu121, 2.5.1, 2.5.1+cu121, 2.6.0)
ERROR: No matching distribution found for torch==2.1.2
Traceback (most recent call last):
  File "/home/laurent/Programmes/Programmation/ia/stable_diffusion/stable-diffusion-webui/launch.py", line 48, in <module>
    main()
  File "/home/laurent/Programmes/Programmation/ia/stable_diffusion/stable-diffusion-webui/launch.py", line 39, in main
    prepare_environment()
  File "/home/laurent/Programmes/Programmation/ia/stable_diffusion/stable-diffusion-webui/modules/launch_utils.py", line 381, in prepare_environment
    run(f'"{python}" -m {torch_command}', "Installing torch and torchvision", "Couldn't install torch", live=True)
  File "/home/laurent/Programmes/Programmation/ia/stable_diffusion/stable-diffusion-webui/modules/launch_utils.py", line 116, in run
    raise RuntimeError("\n".join(error_bits))
RuntimeError: Couldn't install torch.
Command: "/home/laurent/Programmes/Programmation/ia/stable_diffusion/stable-diffusion-webui/venv/bin/python" -m pip install torch==2.1.2 torchvision==0.16.2 --extra-index-url https://download.pytorch.org/whl/cu121
Error code: 1