No module named "skimage"

[gasertaha]

Hello, I'm facing this problem for a long time and I'm pretty sure Scikit-image is installed, however, I get this error:

(crystal) C:\Users\PC\Documents\GitHub\BubMask>python3 bubble.py splash --weights=path/to/mask_rcnn_bubble.h5 --image=path/to/image
Traceback (most recent call last):
File "C:\Users\PC\Documents\GitHub\BubMask\bubble.py", line 37, in
import skimage.draw
ModuleNotFoundError: No module named 'skimage'

(crystal) C:\Users\PC\Documents\GitHub\BubMask>python -c "import skimage; print(skimage.version)"
0.19.3

Could you please let me know what I'm doing wrong?