Hi, I am using the silva 138 ssu database to analyze my 18S samples, and I am trying to create a phylogeny tree. So far, this database has worked fine for me, but I am running into an issue with the format? Here is the code and error I am running into. I recognize that I need to have the database in the sepp format, but I'm unsure how to do that?
qiime fragment-insertion sepp --i-representative-sequences ./dada2_rep_set.qza --i-reference-database silva_138.qza --o-tree ./tree.qza --o-placements ./tree_placements.qza --p-threads 1
Invalid value for '--i-reference-database': Expected an artifact of at
least type SeppReferenceDatabase. An artifact of type TaxonomicClassifier