"Failed to create notebook server" when I use notebook in ArcGIS Pro 2.5

WanzhiXiao

When I use the Jupyter notebook in ArcGIS Pro 2.5, it shows "Failed to create notebook server". I don't why and I can't fix it. Does anyone meet the same question? Can someone help me fix this problem?

Bastien

I had the same problem on AGP 2.7. My previous python environment was mess up (I've used pip to add some unavailable package under conda, I guess that conda do not liked that).

So to solve the problem: 

1) I've deleted all the previously installed environments under %appdata%/local/esri/conda/envs

2) I've cloned the default python environment of arcgis

3) I've choosed the new cloned environment as my default python env. 

Everything works fine now (but of course all the non-standard package have to be reinstalled)