Ahh I see. I was thingking of:
There are 9 characters that are disallowed by Windows: < > : " / \ | > *
I ran your validator… why would these be invalid?
ERROR The term "resourcetypes/case-studies" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/engineering-notes" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/guides" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/method" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/newsletters" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/principals" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/recipes" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/signals" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/videos" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
ERROR The term "resourcetypes/workshops" in taxonomy "resourceTypes" is invalid. Taxonomy terms may contain Unicode letters, Unicode numbers, spaces, and any of the following characters: "_", "-", "#", "+", ".", "@", and "~".
well it looks like this might be the culprot:
resourceTypes: recipes
Hugo is reading it as resourceTypes/recipes
as the taxonomy name. Odd… but ok…