Hello @Felipe_Rocha,
The command @thermokarst ran was meant to produce a .biom file not a .tsv file. I suspect you followed all the steps correctly, but gave your output file, feature-table-withtaxon.tsv, the wrong file extension. It should be a valid .biom file, but when viewed as a .tsv it looks corrupted and broken because .biom is a binary file format. Please change the extension on the file from .tsv to .biom and let us know if it works in your analyses.
Thank you,
@Oddant1