matplotlib module missing for version 0.3.0
After updating from grisinv version 0.2.0 to version 0.3.0 , an Error "ModuleNotFoundError: No module named 'matplotlib'" appeared. I have updated only with "pip install git+https://gitlab.leibniz-kis.de/sdc/grisinv.git". I have not downloaded the new conda environment.
Solution: Installing matplotlib by hand using "conda install matplotlib" with the gris_env environment active worked out fine. The gris_env environment should be updated.