scann and imwatermark module issues with Windows 10

[b5071]

Hello,

Thank you for writing this extension. I have been unable to get it working on a Windows machine... I am getting these errors on Windows 10 when trying to use this repo as an extension with stable-diffusion-webui. I think they may be specific to Windows, as I've had trouble finding a version of the "scann" module for Windows.

The errors that appear when running stable-diffusion-webui's webui.bat or webui-user.bat are as follows:

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Error loading script: gen_aesthetic_embeddings.py
Traceback (most recent call last):
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\modules\scripts.py", line 159, in load_scripts
exec(compiled, module.dict)
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\extensions\stable-diffusion-aesthetic-gradients\scripts\gen_aesthetic_embeddings.py", line 23, in
embs = torch.cat(embs, dim=0).mean(dim=0, keepdim=True)
RuntimeError: torch.cat(): expected a non-empty list of Tensors

Error loading script: knn2img.py
Traceback (most recent call last):
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\modules\scripts.py", line 159, in load_scripts
exec(compiled, module.dict)
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\extensions\stable-diffusion-aesthetic-gradients\scripts\knn2img.py", line 12, in
import scann
ModuleNotFoundError: No module named 'scann'

Error loading script: train_searcher.py
Traceback (most recent call last):
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\modules\scripts.py", line 159, in load_scripts
exec(compiled, module.dict)
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\extensions\stable-diffusion-aesthetic-gradients\scripts\train_searcher.py", line 3, in
import scann
ModuleNotFoundError: No module named 'scann'

Error loading script: txt2img.py
Traceback (most recent call last):
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\modules\scripts.py", line 159, in load_scripts
exec(compiled, module.dict)
File "C:\Users\bryan\stable-diffusion-webui-new\stable-diffusion-webui\extensions\stable-diffusion-aesthetic-gradients\scripts\txt2img.py", line 8, in
from imwatermark import WatermarkEncoder
ModuleNotFoundError: No module named 'imwatermark'

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Please let me know if you may know why this is happening, thanks!