Hello! I am trying to perform a microbial functional prediction using the Tax4Fun package in RStudio, using data outputs from the qiime2 pathway. The program requires 16S OTU table(s) predicted by QIIME based on the SILVA database. As a result, I am trying to upload the file feature-table.biom, but am getting an error (workflow shown below). Has anyone had this problem before and figured out how to fix it? Any help would be greatly appreciated 
> importQIIMEBiomData(feature_table.biom)
Error in read_biom(file) : could not find function "read_biom"