Has anyone been able to install additional python packages for their cloned Python Environment in ArcGIS Pro 3.0 succesfully? I have been struggling to install the cartopy package.
Using the Package Manager, if I initially search for cartopy it finds nothing.
So I used conda in the Python Command prompt to install it with:
conda install -c conda-forge cartopy
Doing this successfully installs the package and it also shows up in my Package Manager afterwards:

However, now when I open any notebook, or try to create a new one I get the "Failed to create notebook server" error:

Any suggestions will be appreciated!