error log

Traceback (most recent call last):
  File "patch_win.py", line 121, in <module>
  File "yaml\__init__.pyc", line 57, in load
  File "yaml\loader.pyc", line 34, in __init__
  File "yaml\reader.pyc", line 114, in __init__
  File "yaml\reader.pyc", line 170, in determine_encoding
  File "yaml\reader.pyc", line 200, in update
ReaderError: 'utf8' codec can't decode byte #x8b: invalid start byte
  in "<string>", position 1