Getting ValueError: Unknown layer: RNet

[Dannobot]

Hi everyone

I try to run prediction on python3 (Keras 2.2.4) and I get an error:

Preparing model...Traceback (most recent call last):
File "predict.py", line 33, in
model = load_model(args.model, custom_objects())
File "/home/ivan/.local/lib/python3.6/site-packages/keras/engine/saving.py", line 419, in load_model
model = _deserialize_model(f, custom_objects, compile)
File "/home/ivan/.local/lib/python3.6/site-packages/keras/engine/saving.py", line 225, in _deserialize_model
model = model_from_config(model_config, custom_objects=custom_objects)
File "/home/ivan/.local/lib/python3.6/site-packages/keras/engine/saving.py", line 458, in model_from_config
return deserialize(config, custom_objects=custom_objects)
File "/home/ivan/.local/lib/python3.6/site-packages/keras/layers/init.py", line 55, in deserialize
printable_module_name='layer')
File "/home/ivan/.local/lib/python3.6/site-packages/keras/utils/generic_utils.py", line 138, in deserialize_keras_object
': ' + class_name)
ValueError: Unknown layer: RNet

The problem with the Keras version or something else?
How can it be fixed?