Missing variables "A_4_idx”, "A_4_values", "A_4_shape", "A_4_sparse", and "A_4"

Hi there,

First of all, thank you for sharing this awesome code. I am wondering if you could help me get the variables associated with "A4".

I have downloaded your repo on Github (https://gitlab.com/qub_femg/machine-learning/hierarchical-cadnet), and I have followed the instructions to run the codes "generate_hier_graphs.py" and "generate_batches.py" to convert the STEP files into graphs and generate the batches for training. However, when I was trying to run the code "train_single_feat.py", my system told me it could not find variables associated with "A4". For example, when I checked my debugging console, I got the following return:

A_4_idx array(None, dtype=object) A_4_values array(None, dtype=object) A_4_shape array(None, dtype=object)

When I checked the python codes "generate_hier_graphs.py" and "generate_batches.py", I could only find variable names starting with "A_1", "A_2", and "A_3" while there was nothing related to "A_4".

Could you please let me know how I could get the variables starting with "A_4"? Thank you very much.