perplexing error

Sat Sep 8 12:40:49 EDT 2018

I am running a small python code. The main module calls another data loader module. I keep this getting this error.
AttributeError: 'str' object has no attribute 'raw_data' 
I tried few things in the code and finally realized that no matter the line number is 68 of data loader module. Of course, this was after a few iterations.
I then commented this line itself but I still get this error.
Below is a little longer code snippet.
AttributeErrorTraceback (most recent call last)
D:\Projects\Initiatives\machine learning\Log analyzer\log_analyzer.py in <module>()
 32 model = para['models']
 33 assert model in ['DT', 'LR', 'SVM']
---> 34 raw_data, event_mapping_data = data_loader.bgl_data_loader(para)
 35 
 36 logger.debug("raw data %s \n", raw_data)
D:\Projects\Initiatives\machine learning\loglizer-master\loglizer-master\utils\data_loader.py in bgl_data_loader(para)
 66 # get the label for each log
 67 data_df['label'] = (data_df['label'] != '-').astype(int)
---> 68 #logger.debug("data frame %s \n", data_df)
 69 logger.debug("\n")
 70 raw_data = data_df[['label','seconds_since']].as_matrix()
AttributeError: 'str' object has no attribute 'raw_data' 
If you notice, line 68 is commented.
I am not sure what I am doing wrong.
Need some inputs ...