Pagination link to page not gallery

Hello

I having trouble with pagination.
It linkink to a page of my “site” (in real I remove all and only add this virtual gallery for test that) :
http://lecoffredecasea.com/2018/03/08/bonjour-tout-le-monde/nggallery/page/2

I just install wordpress, used theme twentyseventeen and add a link to a test gallery.
Nothing else.

But I have always a pagination problem.
Could you help me ?
Thank you so much !!

The page I need help with: [log in to see the link]