Issues encountered

Using pip versions of qbiome/quasinet,

• example1.ipynb

  • label_matrix populates with nan strings
  • training sometimes fails with ValueError: zero-size array to reduction operation maximum which has no identity

• example2.ipynb

  • same issue with label_matrix and nan strings
  • frequently getting 622 features instead of 621 (cf. the known bug)
    • sns.lineplot fails for 'Actinobacteriota', 'Bacteroidota' biomes with ValueError: cannot reindex from a duplicate axis