[Python] TPU (v2-8) in Google Colab causes the accuracy score of deep learning model to drop...

I am rebuilding some of my old deep learning models that I created in September 2024 in Google Colab using the newest TPU version (v2-8 TPU). However, when I build my model, the accuracy score drops significantly. In the past, my model's validation accuracy was 92%, but now it has dropped to 11.73%, and the loss is NaN. I didn't change anything in the dataset or the code, so I think it's because of the new TPU version. Has anyone encountered the same problem?

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