Converting .jpg to .ngc

Running LinuxCNC 10 on a gantry mill / engraver.

I am trying to convert a jpg file to G-code. Using the Image to G-Code document, I tried using the terminal to convert my test file.
The result:

cnc@CNC1:~/Desktop$ image-to-gcode Mickey.jpg > mickey.ngc
Traceback (most recent call last):
  File "/usr/bin/image-to-gcode", line 29, in <module>
    from PIL import Image
ModuleNotFoundError: No module named 'PIL'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/image-to-gcode", line 31, in <module>
    import Image
ModuleNotFoundError: No module named 'Image'

Do I need to install these modules? Where do I find them and where do they go?

Thanks for the reply. Tried that.
New problem:
cnc@CNC1:~/Desktop$ image-to-gcode Mickey.jpg > mickey.ngc
/usr/bin/image-to-gcode:772: DeprecationWarning: The binary mode of fromstring is deprecated, as it behaves surprisingly on unicode inputs. Use frombuffer instead
nim = numpy.fromstring(tobytes(im), dtype=numpy.uint8).reshape((h, w)).astype(numpy.float32)
Traceback (most recent call last):
File "/usr/bin/image-to-gcode", line 502, in ui
from PIL import ImageTk
ImportError: cannot import name 'ImageTk' from 'PIL' (/usr/lib/python3/dist-packages/PIL/__init__.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/image-to-gcode", line 837, in <module>
main()
File "/usr/bin/image-to-gcode", line 773, in main
options = ui(im, nim, im_name)
^^^^^^^^^^^^^^^^^^^^
File "/usr/bin/image-to-gcode", line 504, in ui
import ImageTk
ModuleNotFoundError: No module named 'ImageTk'

Do I need an updated copy of image-to-gcode?

Installed python3-pil.imagetk - it looks like it's working now. Thanks!

Spoke too soon. The control panel comes up, but there's errors in the terminal window: Have to hit control-c to get out after clicking 'OK'

nc@CNC1:~$ image-to-gcode Mickey.jpg > mickey.ngc
/usr/bin/image-to-gcode:772: DeprecationWarning: The binary mode of fromstring is deprecated, as it behaves surprisingly on unicode inputs. Use frombuffer instead
nim = numpy.fromstring(tobytes(im), dtype=numpy.uint8).reshape((h, w)).astype(numpy.float32)
/usr/bin/image-to-gcode:522: DeprecationWarning: ANTIALIAS is deprecated and will be removed in Pillow 10 (2023-07-01). Use LANCZOS or Resampling.LANCZOS instead.
ui_image = im.resize((nw,nh), Image.ANTIALIAS)

Opening the image in LinuxCNC resulted in a file with over 135,000 lines of G-code. It took quite a while to crunch through.
But it appears to be a usable file for engraving the image.
Thanks for the help!

One remaining issue - I can't save the generated G-code. The save file option gives an error that the input file does not exist.