Gneiss on collapsed FeatureTable

Hi @colinbrislawn and @thermokarst,

I am using qiime2-2018.2

Here is my command:
qiime gneiss balance-taxonomy
--i-table Gneiss-comp-L7.qza
--i-tree hierarchy.qza
--i-taxonomy taxonomy1.qza
--p-taxa-level 7
--p-balance-name 'y0'
--m-metadata-file sample-metadata.txt
--m-metadata-column Tillage
--o-visualization y0_Tillage-L7.qzv
--verbose

Below is the error I am getting:

/home/ali/miniconda3/envs/qiime2-2018.2/lib/python3.5/site-packages/gneiss-0.4.2-py3.5.egg/gneiss/util.py:181: FutureWarning: '.reindex_axis' is deprecated and will be removed in a future version. Use '.reindex' instead.
Plugin error from gneiss:
"None of [frozenset({'k__Fungi;p__Ascomycota;c__Sordariomycetes;o__Hypocreales;f__Hypocreaceae;g__Trichoderma;s__Trichoderma_asperellum', 'k__Fungi;p__Basidiomycota;c__Tremellomycetes;o__Cystofilobasidiales;f__Mrakiaceae;g__Mrakia;s__Mrakia_frigida', 'k__Fungi;p__Ascomycota;c__Sordariomycetes;o__Hypocreales;f__Hypocreales_fam_Incertae_sedis;g__Acremonium;s__Acremonium_persicinum', 'k__Fungi;p__Ascomycota;c__Leotiomycetes;o__Helotiales;f__Helotiales_fam_Incertae_sedis;g__Chalara;s__u ....................] are in the [index]"

I just copied the first couple lines of the featureTable,
Thanks for your help,
Ali