ValueError: Unknown layer: HaarWaveLayer2D

[CTGUzhangguangyi]

I try to use "tf.keras.models.load_model",error happen

raise ValueError('Unknown ' + printable_module_name + ': ' + class_name)
ValueError: Unknown layer: HaarWaveLayer2D

but I can't be used directly ,like this(It,s also wrong to do so)

from wavetf._haar_conv import *
...
_custom_objects = {
"HaarWaveLayer2D" : HaarWaveLayer2D,
}
model = tf.keras.models.load_model("path/to/your/model", custom_objects=_custom_objects)

How can I solve this problem