Web Audio Evaluation Tool

I have a single test-0.xml file in saves (obtained from an AB interface test, attached to this post).
when running the python scripts I obtain the following results

$ pyhton comment_parser.py
Use: python  comment_parser.py [XML_files_location]
Using default path: ../saves
Traceback (most recent call last):
  File "comment_parser.py", line 73, in <module>
    commentstr = audioelement.find("./comment/response").text
AttributeError: 'NoneType' object has no attribute 'text'

$ pyhton evaluation_stats.py
Use: python evaluation_stats.py [results_folder]
Using default path: ../saves
test-0.xml
    TOTAL: 0 min 0 s
Number of XML files: 1
Number of pages: 0
Number of fragments: 0
Traceback (most recent call last):
  File "evaluation_stats.py", line 163, in <module>
    " (" + str(round(100.0*total_empty_comments/number_of_fragments,2)) + "%)" 
ZeroDivisionError: float division by zero

$ pyhton generate_report.py
Use: python generate_report.py [results_folder] [no_render | -nr]
Using default path: ../saves/
Traceback (most recent call last):
  File "generate_report.py", line 310, in <module>
    " (" + str(round(100.0*total_empty_comments/number_of_fragments,2)) + r"\%)\\"+'\n\t\t\t'
ZeroDivisionError: float division by zero

$ pyhton score_parser.py
Use: python score_parser.py [rating_folder_location]
Using default path: ../saves

$ pyhton score_plot.py
Use: python score_plot.py [rating folder] [plot_type] [-l/-legend]
Type 'python score_plot.py -h' for help.
Using default path: ../saves/ratings/ with boxplot.

$ pyhton timeline_view.py
Use: python timeline_view.py [XML_files_location]
Using default path: ../saves

$ pyhton timeline_view_movement.py
Use: python timeline_view_movement.py [XML_files_location]
Using default path: ../saves

after the scripts, the content of the saves folder is as follows. Is everything ok or am I missing something because of the above errors?

./ratings
./ratings/test-0-ratings-box.pdf
./ratings/test-0-ratings.csv
./ratings/test-1-ratings-box.pdf
./ratings/test-1-ratings.csv
./ratings/test-10-ratings-box.pdf
./ratings/test-10-ratings.csv
./ratings/test-11-ratings-box.pdf
./ratings/test-11-ratings.csv
./ratings/test-12-ratings-box.pdf
./ratings/test-12-ratings.csv
./ratings/test-13-ratings-box.pdf
./ratings/test-13-ratings.csv
./ratings/test-14-ratings-box.pdf
./ratings/test-14-ratings.csv
./ratings/test-15-ratings-box.pdf
./ratings/test-15-ratings.csv
./ratings/test-16-ratings-box.pdf
./ratings/test-16-ratings.csv
./ratings/test-17-ratings-box.pdf
./ratings/test-17-ratings.csv
./ratings/test-2-ratings-box.pdf
./ratings/test-2-ratings.csv
./ratings/test-3-ratings-box.pdf
./ratings/test-3-ratings.csv
./ratings/test-4-ratings-box.pdf
./ratings/test-4-ratings.csv
./ratings/test-5-ratings-box.pdf
./ratings/test-5-ratings.csv
./ratings/test-6-ratings-box.pdf
./ratings/test-6-ratings.csv
./ratings/test-7-ratings-box.pdf
./ratings/test-7-ratings.csv
./ratings/test-8-ratings-box.pdf
./ratings/test-8-ratings.csv
./ratings/test-9-ratings-box.pdf
./ratings/test-9-ratings.csv
./read.txt
./test-0.xml
./test-11
./test-11/test-11-comments-track-23.csv
./timelines
./timelines_movement