I’ve got this error, just following the « Getting Started with Rasa » tutorial
So I’ve typed:
sudo pip3 install rasa-x --extra-index-url https://pypi.rasa.com/simple
which seems to work fine but when I’ve typed:
sudo rasa init
I’ve got a lot of errors among them:
rasa.core.policies.ensemble.InvalidPolicyConfig: Module for policy ‘MemoizationPolicy’ could not be loaded. Please make sure the name is a valid policy.
I faced the same problem when I tried using - rasa init. This is solved by paying attention to 2 things. When you try to install rasa using - pip install rasa in a virtual environment. This install latest python version, in my case this was 3.8, but the problem was that TensorFlow support was not available for 3.8, So I will suggest-
conda create --name rasa python=3.6
For anaconda or you could also create a virtual environment. Now use
pip install rasa
Now you will notice TensorFlow==1.15.1 will be installed. For rasa to work we will need TensorFlow==1.15.0
pip uninstall tensorflow
pip install tensorflow-cpu==1.15.0
if you want CPU support only otherwise,
pip install tensorflow==1.15.0
This worked for me.
In fact, it was a dependencies nightmare.
So what I’ve done to get a rasa chatbot up and running:
sudo pip3 install "dask[complete]"
sudo pip3 install pandas==0.19.2
sudo pip3 install -U tqdm
sudo pip3 install -U gym
Et voilà!
This is a library mismatch error. It is Rasa version error, you most probably installed Rasa 1.7.0 or 1.8.0 you need to downgrade to 1.6.0. After downgrading it solved my problem.
Commands to run :
pip uninstall rasa
After you uninstall, re-install rasa by running the commands
pip install rasa==1.6.0
or
python -m pip install rasa==1.6.0
Try using rasa-x rather than rasa library:
virtualenv -p 3.6.8 rasaenvx
rasaenvx\Scripts\activate
pip3 install rasa-x --extra-index-url https://pypi.rasa.com/simple
rasa init --no-prompt
