python : Traceback (most recent call 
last):
At line:1 char:1
+ python run_pipeline.py 2> error.log
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecifi 
   ed: (Traceback (most recent call las  
  t)::String) [], RemoteException
    + FullyQualifiedErrorId : NativeComm 
   andError
 
  File 
"C:\Users\user\Documents\FairValue 
Player\run_pipeline.py", line 88, in 
<module>
    run_end_to_end_pipeline()
  File 
"C:\Users\user\Documents\FairValue 
Player\run_pipeline.py", line 19, in 
run_end_to_end_pipeline
    tm_path = os.path.join(os.path.abspat
h(os.path.dirname(__file__)), 'data', 
'raw', 'transfermarkt')
              ^^
UnboundLocalError: cannot access local 
variable 'os' where it is not associated 
with a value