forward() missing 1 required positional argument: 'indices'

This error message indicates that the function `forward()` requires an argument called `indices` that was not provided when the function was called.

To fix this error, you need to pass the required argument `indices` to the `forward()` function when you call it. You should check the documentation for the function to see what kind of data type the `indices` argument should be and make sure that you pass in the correct type of data.

For example, if the `indices` argument is supposed to be a list of integers, you might call the function like this:

my_model.forward(indices=[0, 1, 2])

Alternatively, you might need to modify the function definition to make the `indices` argument optional or provide a default value.