Error 404 when translating property

Hello,

I have the following problem. The propeerties are showing perfect when I am trying to see them in English:
https://www.cocobeachexperience.com/property/hk201/

But when I am trying to see them in Spanish or frensch, it gives me an error 404:
https://www.cocobeachexperience.com/propiedad/arthouse-3/?lang=es

I have the feeling that it’s maybe du to the change on the url of https://www.cocobeachexperience.com/propiedad, but I don’t know where I should change it to put it back as property

Any idea why?
Thank you so much for your help!