getting error while running run.py

[samruddhag1]

KeyError: 'strategy'
Traceback (most recent call last):
File "/home/user/DeepCARSKit/run.py", line 32, in
run(config_file_list=config_list)
File "/home/user/DeepCARSKit/deepcarskit/quick_start/quick_start.py", line 96, in run
train_data, valid_data = data_preparation(config, dataset)
File "/home/user/DeepCARSKit/deepcarskit/data/utils.py", line 132, in data_preparation
train_sampler, valid_sampler = create_samplers(config, dataset, built_datasets[fold])
File "/home/user/DeepCARSKit/deepcarskit/data/utils.py", line 301, in create_samplers
if train_neg_sample_args['strategy'] != 'none':