Taxonomy link not bringing up listings

Hi,
I’ve started a new taxonomy but I cannot get the listings assigned to the taxonomy to display from any taxonomy link. If I go in to listing manager, click on my new taxonomy and then click on a category from the taxonomy I get “this is somewhat embarrasing”etc. Likewise, if I go to a listing from the taxonomy and click on the taxonomy link on the listing I get the same message. Here is the link that shows what happens when I click the taxonomy.
https://www.mowcompare.org/dealers/services/machine-servicing/

(The taxonomy is “services” and the category from the taxonomy is “machine servicing” )