I’m getting the below error when I try to run the following: [image] RASA core versions: rasa_core==0.10.4 rasa_core_sdk==0.11.3 my code: agent = Agent(domain_file, policies=[ MemoizationPolicy(max_history=3), KerasPolicy(), FallbackPolicy(fallback_action_name="action_default_fall", nlu_threshold=0.65, core_threshold=0.4)]) agent.train( training_data_file, epochs = 200, batch_size = 50, validation_split = 0.2)

Hi @duckingbread , the Rasa Core and Rasa NLU frameworks have been merged into a single framework called Rasa. Could you install the latest version of that and the SDK and try again?

I have the same problem. how did you resolve it?

you can use keras 2.0.8 version it worked for me. !pip install Keras==2.0.8

Cannot import name _BACKEND ERROR

Rasa Open Source

duckingbread (Chris) September 3, 2019, 7:44am 3

I need to run the older versions only. Anyway found out the issue. Keras released the latest version which doesn’t use the _BACKEND variable. So i just listed earlier Keras version in the requirements file.

Topic		Replies	Views
ValueError: Tensor Tensor("activation_1_1/Softmax:0", shape=(None, 9), dtype=float32) is not an element of this graph Getting Started with Rasa	2	153	April 15, 2020
Rasa core cannot import name 'Layer' Rasa Open Source	1	1196	February 28, 2019
ImportError: cannot import name 'data_adapter' from 'keras.engine' (C:\Python39\lib\site-packages\keras\engine\__init__.py) Rasa Open Source	15	2282	November 13, 2021
Dependency errors ... unable to start rasa Rasa Open Source	2	1588	December 2, 2018
Starter-pack-rasa-stack cannot run 'make train-core', Keras error no module 'Activation' Getting Started with Rasa	2	217	February 12, 2019

Cannot import name _BACKEND ERROR

Related topics