I have the same problem also. My permalink settings are a custom structure:
/%year%/%monthnum%/%category%/%postname%/
I probably had the same problem Dteaone had….didn’t get a 404….just a blank page, no code.
example: my site is https://www.brewsplace.com
The link query is “star trek brew”
Which the plugin returns as:
https://www.brewsplace.com/tags/star-trek-brews