Installation issue in Ubuntu VM

[sant3e]

I followed the tutorial installing everything required, under Ubuntu 20.04 in a VirtualBox VM. Everything works fine until i get to this command pip install . jupyter nbextension enable jupyter-text2code/main

I get different errors like: jupyter-nbextension is not found or could not find a version that satisfies the requirments faiss (for jupyter-text2code==0.0.2) and others How can i proceed further?