I couldn't figure out how to get pdf2image working either, instead i installed magick and converted pdf to png, then read in with matplotlib

%sh
cd /opt
wget https://imagemagick.org/archive/binaries/magick
chmod 777 magick

%sh
/opt/magick convert $vcfFiles/$sample_id.pdf $vcfFiles/$sample_id.png 

import matplotlib.pyplot as plt
import matplotlib.image as img
  
im = img.imread(vcfFiles +  sample_id + ".png")
plt.imshow(im)
display()

cheers