message: Update local.py
  Possible solution to
diff: @@ -734,7 +734,7 @@ def local_conv_matmul(inputs, kernel, kernel_mask, output_shape):
  kernel = kernel_mask * kernel
  kernel = make_2d(kernel, split_dim=backend.ndim(kernel) // 2)
  - output_flat = math_ops.sparse_matmul(inputs_flat, kernel, b_is_sparse=True)
  + output_flat = math_ops.matmul(inputs_flat, kernel, b_is_sparse=True)
  output = backend.reshape(output_flat, [
  backend.shape(output_flat)[0],
  ] + output_shape.as_list()[1:])
  