Error when adding event hierarchy tree #91
Description
When running checkIPTdataset with the option tree = "yes" the QC fails with the error "Error in if (if (exists("ev_check_id")) { : argument is of length zero"
{{ message }}
When running checkIPTdataset with the option tree = "yes" the QC fails with the error "Error in if (if (exists("ev_check_id")) { : argument is of length zero"