I also have this issue. Google Search Console indicates that https://volupto.com.au/recommendations/products is “Blocked due to other 4xx issue”.
One of the referring pages is listed as https://volupto.com.au/products/renoir-stone-bath.
Nothing in the page links to that URL, but I found this in the code:
@PaulNewton would you still recommend adding it to Robots.txt? Or setting up a 301?
Thanks in advance for your help!
Emmanuelle.