Good morning. 
So the conda package hasn't been updated for a few years.  But the libraries that run it have.  This causes WRF python to break. 
Specifically it's netcdf that is causing it. 
WRF python needs older libraries then what is installed.  
So the way around it is to build a new environment but in a specific order. 
conda init bash
  conda activate base
  conda create -n wrf-python -y
  conda activate wrf-python
  conda install -c conda-forge netcdf4=1.5.8 -y --freeze-installed
  conda install -c conda-forge imageio=2.27.0 -y --freeze-installed
  conda install -c conda-forge basemap=1.3.6 -y --freeze-installed
  conda install -c conda-forge metpy=1.4.1 -y --freeze-installed
  conda install -c conda-forge wrf-python=1.3.4.1 -y --freeze-installed
  conda deactivate
  conda deactivate
  conda deactivate