Having 2 categories assigned to a custom post type gives a 404 page error

Hello, I am setting up the permalink structure for my travel website and I currently have this:

https://thenomade.com/guides/mexico/playa-del-carmen/where-to-eat-and-beach-in-playa-del-carmen-guide/

As you can see this leads to a 404 error because my post has 2 assigned categories

But if you remove the second one and leave the link like this:

https://thenomade.com/guides/mexico/where-to-eat-and-beach-in-playa-del-carmen-guide/

It works.

Also when I look at the custom post permalink it shows correctly in the wordpress admin

Any idea why when the second category is added the page gives a 404 error?

• This topic was modified 4 minutes ago by dobstotev.