Problems encountered while running code

[Tom345345]

RouteNet-Erlang-main/Scheduling/Delay/check_predictions.py:

problem: 1、model.load_weights('./ckpt_dir/{}'.format(best)) Exception has occurred: ValueError Unable to load weights saved in HDF5 format into a subclassed Model which has not created its variables yet. Call the Model first, then load the weights. 2、I can't find the following dataset ds_test = input_fn('../../data/gnnet_data_set_evaluation_delays', label='PktsDrop', shuffle=False) 3、Why under this directory（data) sys.path.insert(1, '../../data/')