Does the folder exist at YOUR_PATH\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Inspyrenet-Rembg ?
Does in contain Inspyrenet_Rembg.py and __init__.py ?
Does __init__.py read like this (open with text editor):
from .Inspyrenet_Rembg import InspyrenetRembg, InspyrenetRembgAdvanced
NODE_CLASS_MAPPINGS = {
"InspyrenetRembg" : InspyrenetRembg,
"InspyrenetRembgAdvanced" : InspyrenetRembgAdvanced,
}
NODE_DISPLAY_NAME_MAPPINGS = {
"InspyrenetRembg": "Inspyrenet Rembg",
"InspyrenetRembgAdvanced": "Inspyrenet Rembg Advanced"
}
__all__ = ['NODE_CLASS_MAPPINGS', "NODE_DISPLAY_NAME_MAPPINGS"]
?
If you CTRL+F into terminal window with "invalid prompt" error and search for "Import times for custom nodes" - is \ComfyUI-Inspyrenet-Rembg imported properly?