Cannot find path

Trying to install it on windows:

I did run power shell as admin and set it to unrestricted.
then opened it regularly and copied the lines into power shell.

After I copied the lines into power shell I did the config then I got this error:

Do you wish to use FP16 or BF16 (mixed precision)?
fp16
accelerate configuration saved at C:\Users\Fischer/.cache\huggingface\accelerate\default_config.yaml
cp : Cannot find path 'C:\Users\Fischer\Kohya\bitsandbytes_windows\main.py' because it does not exist.
At line:3 char:1
+ cp .\bitsandbytes_windows\main.py .\venv\Lib\site-packages\bitsandbyt ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (C:\Users\Fische...windows\main.py:String) [Copy-Item], ItemNotFoundExce
ption
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.CopyItemCommand

cp : Cannot find path 'C:\Users\Fischer\Kohya\bitsandbytes_windows\cextension.py' because it does not exist.
At line:4 char:1
+ cp .\bitsandbytes_windows\cextension.py .\venv\Lib\site-packages\bits ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (C:\Users\Fische...s\cextension.py:String) [Copy-Item], ItemNotFoundExce
ption
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.CopyItemCommand

cp : Cannot find path 'C:\Users\Fischer\Kohya\bitsandbytes_windows' because it does not exist.
At line:5 char:1
+ cp .\bitsandbytes_windows\*.dll .\venv\Lib\site-packages\bitsandbytes ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (C:\Users\Fische...ndbytes_windows:String) [Copy-Item], ItemNotFoundExce
ption
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.CopyItemCommand



It seems like I am missing something but I don't know what. Python 3.10.6(also tested it with 3.10.9) and Git is installed.
Can someone help me please?

Start by checking the PowerShell copy commands for .\bitsandbytes_windows\main.py, cextension.py, and *.dll against the reported C:\Users\Fischer\Kohya paths. Verify the expected bitsandbytes_windows directory and files are present before running the commands; done means installation no longer reports these missing paths.

Written by the indexing model from the issue text.