Error while executing about dl-massive-mimo HOT 1 OPEN

Hi, I am facing those errors during running the codes.I hope u can help me to make those codes run properly.
1-In the channel mapping (main.m)
Error using load
Unable to read file 'D:\channel mapping github\rawData'. Input cannot be a directory.

Error in main (line 50)
load(options.rawDataFile1);
2- In the DeepMIMO_Dataset_Generator.mat
Error using load
Unable to read file '.\Raytracing_scenarios\I1_2p4\I1_2p4.BSBS.params.mat'. No such file or directory.

Error in validate_parameters>additional_params (line 48)
load([params_inner.scenario_files, '.BSBS.params.mat']) % BS2BS parameter file

Error in validate_parameters (line 3)
[params, params_inner] = additional_params(params);

Error in DeepMIMO_generator (line 12)
[params, params_inner] = validate_parameters(params);

Error in DeepMIMO_Dataset_Generator (line 7)
[DeepMIMO_dataset, dataset_params] = DeepMIMO_generator(dataset_params);

from dl-massive-mimo.