I was facing the same problem so I opened the issue by following your link:

  
      github.com/pytorch/tutorials
  
  
    
  
	  
  

  
    
      Error when run reinforcement_q_learning.ipynb 26
    

    
      
        opened 
        
          
        
        Mar 30, 2020
      
      


      
        
          
          tv76
        
      
    
  



  Periodically I try to run the example (my computer: Windows 10, browser: Google Chrome):
pytorch.org -> Tutorials -> Reinforcement Learning -> Reinforcement...