autoencoder_model.fit(data, data, epochs=10, batch_size=8, shuffle=True)，model = train_model(data)，提示了这两段代码出现了You must compile your model before training/testing. Use `model.compile(optimizer, loss)`.这样的错误

This error occurs when you try to train or test your model without compiling it first. Before you can train or test your model, you need to define the optimizer and loss functions by calling the `compile` method on your model.

In your first code snippet, you need to add the following line before calling `fit`:

autoencoder_model.compile(optimizer='adam', loss='mse')

In your second code snippet, you need to add the following line before returning `model`:

model.compile(optimizer='adam', loss='mse')

Replace `'adam'` with the optimizer of your choice and `'mse'` with the loss function of your choice. Once you have compiled your model, you can train or test it without encountering the error you mentioned.