Word embedding tutorial code does not exit properly

Hi, I am writing in regard of the following tutorial:

WORD EMBEDDINGS: ENCODING LEXICAL SEMANTICS
https://pytorch.org/tutorials/beginner/nlp/word_embeddings_tutorial.html

I copied the code of the first part (the Shakespeare Sonnet cassifier). No changes were made.
When I run the script, the program refuses to exit and freezes after printing the losses at the end, and I don’t know why

Any help?
Thank’s

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