Why does my `/ontdek/category` index page gives a forbidden?

Hi,

Why does my

/ontdek/category

/ontdek/category

index page gives a forbidden? Everything seems to work fine except my

/ontdek/category/index.vue

/ontdek/category/index.vue

this one gives a forbidden when I run

yarn generate

yarn generate

.
My

/ontdek

/ontdek

and

/ontdek/category/slug

/ontdek/category/slug

are working perfect.

Someone who sees what my mistake is?

Why does my `/ontdek/category` index page gives a forbidden? - Nuxt