Thank you for the notebook. I am running in Google Colab. In the Loadin Label Map section, this code block leads to the above error. Is there a step missing that creates the "data" directory? TIA.
# List of the strings that is used to add correct label for each box.
PATH_TO_LABELS = 'data/mscoco_label_map.pbtxt'
category_index = label_map_util.create_category_index_from_labelmap(PATH_TO_LABELS, use_display_name=True)