message: Fix erroneous dimension .value call
diff: @@ -549,7 +549,8 @@ class Flatten(Layer):
  inputs = array_ops.transpose(inputs, perm=permutation)
  outputs = array_ops.reshape(
  - inputs, (inputs.shape[0].value or array_ops.shape(inputs)[0], -1))
  + inputs, (tensor_shape.dimension_value(inputs.shape[0])
  + or array_ops.shape(inputs)[0], -1))
  if not context.executing_eagerly():
  outputs.set_shape(self.compute_output_shape(inputs.get_shape()))
  return outputs
  