Looking for help appending taxonomic info to biom table

Did you solve the problem with the “TypeError: can only join an iterable”?
I added my taxonomy to my biom file and got this error when I tried to convert the file to tsv.
I used the following code:

biom convert -i ./feature-table-tax.biom -o ./feature-table-tax.txt --table-type=“OTU table” --to-tsv --header-key taxonomy

When I delete the --header-key taxonomy the command works and I get a tsv-file - but of course - without the taxonomy infos. If I try the command with the --header-key taxonomy the above-named error appeared. How can I solve this problem? :slight_smile:

Thank you for your suggestions!