404 error

Hello,
We are having a problem with 404 links.

Errors can be seen on ahref seo. Image https://postimg.cc/0bM4QNMJ
The pages seem to work but we get 404 for these links. Ex: https://www.ongage.com/?p=48391

I am attaching the settings made

name: glossary
label: Glossarys
singular_label: Glossary
description: ""
public: true
publicly_queryable: true
show_ui: true
show_in_nav_menus: true
delete_with_user: false
show_in_rest: true
rest_base: ""
rest_controller_class: ""
rest_namespace: ""
has_archive: true
has_archive_string: ""
exclude_from_search: false
capability_type: post
hierarchical: true
can_export: true
rewrite: true
rewrite_slug: ""
rewrite_withfront: false
query_var: true
query_var_slug: ""
menu_position: ""
show_in_menu: true
show_in_menu_string: ""
menu_icon: ""
custom_supports: ""
enter_title_here: ""
title
editor
thumbnail
custom-fields
author
page-attributes
category_glossary
—No custom labels to display	
Archives file name examples.
archive-glossary.php
archive.php
index.php

Single Posts file name examples.
single-glossary-post_slug.php *
single-glossary.php
single.php
singular.php
index.php

*Replace "post_slug" with the slug of the actual post.

Template hierarchy Theme Handbook

name: category_glossary
label: Categories
singular_label: Category
description: ""
public: true
publicly_queryable: true
hierarchical: true
show_ui: true
show_in_menu: true
show_in_nav_menus: true
query_var: true
query_var_slug: ""
rewrite: true
rewrite_slug: ""
rewrite_withfront: true
rewrite_hierarchical: false
show_admin_column: false
show_in_rest: true
show_tagcloud: false
sort: false
show_in_quick_edit: ""
rest_base: ""
rest_controller_class: ""
rest_namespace: ""
meta_box_cb: ""
default_term: ""
glossary
—No custom labels to display	
Archives file name examples.
taxonomy-category_glossary-term_slug.php *
taxonomy-category_glossary.php
taxonomy.php
archive.php
index.php

*Replace "term_slug" with the slug of the actual taxonomy term.

Template hierarchy Theme Handbook