TransNet | .Net library to create Maltego transformations | Scraper library

i am trying to read multiple images from a folder in a single numpy array to feed them to my deep learning model. when i print the shape i get the error message that none type object has no shape. which means that the images were not read by opencv(for jpg)/tifffile(for .tif)My code is as follows

As can be seen in the code below, I have an intermediate model that defines a custom date field. How can I reference the date_assigned field in the relation model. I am trying find the number of tenders that were assigned to the "user" (i.e. CompanyProfile) on a particular date as per the date_assigned field in the relation model. The CompanyProfile (i.e. user) model and the Tender model share one thing in common, they both have a relationship with the Keywords model through a ManyToMany relationship. This is how I am able to find Tenders allocated to the CompanyProfile through the Keywords model.

This is the final result I am aiming for.