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Could not fetch resource at https://2.zoppoz.workers.dev/v2/external/notebooks/intro.ipynb?vrz=colab_20250724-060040_RC00_786652484: 400 

Could not fetch resource at https://2.zoppoz.workers.dev/v2/external/notebooks/intro.ipynb?vrz=colab_20250724-060040_RC00_786652484: 400  
FetchError: Could not fetch resource at https://2.zoppoz.workers.dev/v2/external/notebooks/intro.ipynb?vrz=colab_20250724-060040_RC00_786652484: 400  
    at DJ.ID [as constructor] (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:1705:3478)
    at new DJ (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:2383:186)
    at sa.program_ (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:2654:59)
    at ta (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:17:57)
    at sa.next_ (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:15:196)
    at oaa.next (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:18:48)
    at b (https://ssl.gstatic.com/colaboratory-static/common/0b1e1d33f4af18a2c1f2760b1379e93a/external_binary.js:18:309)
 OK