module numpy has no attribute matnul

I believe you meant to write "matmul" instead of "matnul". "matmul" stands for matrix multiplication in NumPy. If you are facing an error "module numpy has no attribute matmul", it could be because you might have a typo in your code or you might be using an older version of NumPy that does not support the "matmul" function.

To fix this, try updating your NumPy version to the latest one using the following command:

pip install --upgrade numpy

If you still face the issue, make sure that you have imported NumPy correctly in your code using the following statement:

import numpy as np

Then, you can use the "matmul" function as follows:

result = np.matmul(matrix1, matrix2)

Here, "matrix1" and "matrix2" are two matrices that you want to multiply.