Hello Andre,
The software packages sortmerna and sumaclust and not part of the default qiime pipeline, so you can run most qiime scripts without having them installed.
Are you planning on using either of these software packages? I can help you install them if you need to.
When you run core_diversity_analyses.py, you receive two warnings. These are warnings (not errors) tell the devs to update our code. You can safely ignore them.
These warnings come from the python packages numpy and matplotlib, which are totally unrelated to sortmerna and sumaclust.