When I try to generate a test BIOM 1.0 (JSON) file using make_biom, the result isn't a valid BIOM file.

First get some data to generate an example:

min_dense_file <- system.file("extdata", "min_dense_otu_table.biom", package = "biomformat")
minimal.biom <- read_biom(min_dense_file)
ps <- phyloseq::import_biom(minimal.biom)
new.biom <- make_biom(data=otu_table(ps),matrix_element_type='int',id = 'None')
write_biom(new.biom,biom_file='new.biom')

In the resulting file new.biom:

• The id field has as value the list ["None"] rather than the string "None"
• Similarly the values of the format, format_url, type, etc. fields are lists rather than strings
• For each "row" entry, the id is similarly a list (e.g. ["GG_OTU_1"]) rather than a string