The system cannot find the file specified. - failed to create process (x4)

[ks202005]

Describe the bug An error occurs while attempting to setup stable-diffusion-u by running "Start Stable Diffusion UI.cmd".

To Reproduce Steps to reproduce the behavior:

1. Run "Start Stable Diffusion UI.cmd"
2. Wait for it to finish installing packages (in the following example, I've already completed the first part of the setup, so the packages are already installed)
3. See:

Q:\stable-diffusion-ui>installer\Scripts\activate.bat
failed to create process.
git version 2.34.1.windows.1

(installer) Q:\stable-diffusion-ui\installer\etc\conda\activate.d>cd Q:\stable-diffusion-ui\installer\..\scripts

(installer) Q:\stable-diffusion-ui\scripts>on_env_start.bat

"Stable Diffusion UI - v2"

"Stable Diffusion UI's git repository was already installed. Updating from main.."
HEAD is now at 1c5097b Hotfix for pywavelet version, attempt 1
Already on 'main'
Your branch is up to date with 'origin/main'.
Already up to date.
sd-ui-files\ui\index.html
sd-ui-files\ui\modifiers.json
sd-ui-files\ui\server.py
sd-ui-files\ui\hotfix\9c24e6cd9f499d02c4f21a033736dabd365962dc80fe3aeb57a8f85ea45a20a3.26fead7ea4f0f843f6eb4055dfd25693f1a71f3c6871b184042d4b126244e142
sd-ui-files\ui\media\ding.mp3
sd-ui-files\ui\media\kofi.png
sd-ui-files\ui\sd_internal\ddim_callback.patch
sd-ui-files\ui\sd_internal\env_yaml.patch
sd-ui-files\ui\sd_internal\runtime.py
sd-ui-files\ui\sd_internal\__init__.py
10 File(s) copied
        1 file(s) copied.
        1 file(s) copied.
        1 file(s) copied.

Hotfixed broken JSON file from OpenAI
"Stable Diffusion's git repository was already installed. Updating.."
HEAD is now at d154155 Merge pull request #122 from ryudrigo/main
You are not currently on a branch.
Please specify which branch you want to merge with.
See git-pull(1) for details.

    git pull <remote> <branch>

HEAD is now at d154155 Merge pull request #122 from ryudrigo/main

"Downloading packages necessary for Stable Diffusion.."

"***** This will take some time (depending on the speed of the Internet connection) and may appear to be stuck, but please be patient ***** .."

The system cannot find the file specified.
failed to create process.
failed to create process.
failed to create process.
failed to create process.

"Error installing antlr4-python3-runtime for Stable Diffusion. Sorry about that, please try to:"
"  1. Run this installer again."
"  2. If that doesn't fix it, please try the common troubleshooting steps at https://github.com/cmdr2/stable-diffusion-ui/blob/main/Troubleshooting.md"
"  3. If those steps don't help, please copy *all* the error messages in this window, and ask the community at https://discord.com/invite/u9yhsFmEkB"
"  4. If that doesn't solve the problem, please file an issue at https://github.com/cmdr2/stable-diffusion-ui/issues"
"Thanks!"

Press any key to continue . . .

Expected behavior The installation should complete normally.

Desktop:

• OS: Windows 10 IoT Enterprise 21H2
• Browser: Waterfox G4.1.4
• Version: stable-diffusion-ui v2.05