Thanks for running the website, immensely useful tool.
Today I experienced a wired error saying the #NAME is missing, however, it is included as advised. When using your data, it gives the same error.
Please make sure you have the label #NAME in your sample data file!
Files used are attached.
my_data_OTU_with_taxonomx.txt (1.1 MB)
example_data_OTU.txt (64.2 KB)