Unknown ufl object type FiniteElement

[RaphaelCSIR]

Hi, I tried to run task 1 in Jupyter notebook with Ubuntu in Windows (I download all packages including FEniCS) and this error return right after these lines:

my_model.initialise()
my_model.run()

Any idea?

Thanks
Raph

[KulaginVladimir]

Hello @RaphaelCSIR
How did you install FEniCS? What is the full traceback of your error message?

[RemDelaporteMathurin]

Hi @RaphaelCSIR it seems you forgot to post the error message you obtained. It would help to assist you

[RemDelaporteMathurin]

Just googling the error you gave in the title I found this discourse post with a similar error

I think this is an install problem. Please try following the installation instructions given in the README and in the FESTIM documentation.
We recommend using Anaconda to install fenics

If you are cloning this repository then simply run:

conda env create -f environment.yml

This should create an environment called festim-workshop that you can activate with

conda activate festim-workshop

You should also be able to enable this environment in the jupyter-notebooks to run them