Whole stack didn't work with python 3.7 but does with python 3.8

[iamtrask]

The installation instructions include:

conda create -n mengzi-retrieval-fit python=3.7

I found that this created loads of errors relating to importlib.metadata and importlib_metadata (not for the index but for most everything else). After a little bit of digging I found that Python 3.8 seemed to fix this issue. Upgrading my conda environment to 3.8. (i was lazy and left the index on 3.7). Anyway... for whomever comes after me. If you have these kinds of troubles. Try upgrading to python 3.8 and re-installing.