Simple code fix. In the file rdspg-vector.ipynb is this line to install prereqs:
!pip install -U psycopg2-binary pgvector tqdm boto3 requests
It should actually be:
!pip install -U psycopg2-binary pgvector tqdm boto3 requests scikit-image
Otherwise the code block near the end that performs the similarity search errors out on the line:
from skimage import io
stating "no such module" for skimage.