How to import pydensecrf.densecrf?

I'm getting the following error when I try to run the code:

ImportError: No module named densecrf 

I'm using Jupyter Notebook 5.5.0 from Anaconda on Ubuntu 18.04

Does anyone know what it could be? I try to insert the pydensecrf folder in my project folder, but I still get the same error.

I installed pydensecrf using the command:

pip install pydensecrf

I've also tried installing with:

conda install -c conda-forge pydensecrf

But I get the same error for both.