pagination not working on cpt

Hi everybody!

I use a WP Show Posts list with pagination on a page. It works fine - see URL attached.

Since I changed the type from page to my cpt 'Galerie' the pagination is missing. Only the first page is shown. Might this be a misconfiguration of the cpt?

This is the Definition of the cpt:

name: galerie
label: Galerien
singular_label: Galerie
description: Hier werden die Galerien gesammelt und mit Kategorien versehen.
public: true
publicly_queryable: true
show_ui: true
show_in_nav_menus: true
show_in_rest: false
rest_base: ""
has_archive: true
has_archive_string: Galerie - Archiv
exclude_from_search: false
capability_type: post
hierarchical: false
rewrite: true
rewrite_slug: ""
rewrite_withfront: true
query_var: true
query_var_slug: ""
menu_position: ""
show_in_menu: true
show_in_menu_string: ""
menu_icon: ""
custom_supports: ""

What to do?