4.0.0 carlini_wagner_l2 bug Dimensions must be equal, but are 3 and 20 for '{{node mul_5}} = Mul[T=DT_FLOAT](const, Maximum)' with input shapes: [20,32,32,3], [20].

[inspirepassion]

I noticed that there should be a bug in carlini_wagner_l2:

The original code for const is const = tf.ones(shape) * self.initial_const, which gave me error above.
const = tf.ones(shape) * self.initial_const

But I noticed when I changed it to const = tf.ones(shape[:1]) * self.initial_const, then it's fixed.