Unable to load the datasets.

[Shubham-Mate]

The following is my code:

comm.reset(SCENE_ID)

_, NUM_CAMERAS = comm.camera_count()

FILE_PATH = "graph_data/file156_1.json"

_, graph = comm.environment_graph()

with open(FILE_PATH, 'r') as json_file:
    json_data = json.load(json_file)

init_graph = json_data['init_graph']
final_graph = json_data['final_graph']

success, message = comm.expand_scene(init_graph)

print(success, message)

The output to this is just:
False Error processing input graph: Object reference not set to an instance of an object

Please let me know what I may be doing wrong, or fix this issue