I get a fatal error when I try to add a new page to my site after installing this plugin:

Fatal error: Call to a member function get_page_templates() on a non-object in /path/wp-content/plugins/omit-parent-theme-page-templates/omit-parent-theme-page-templates.php on line 198

I am using Multisite, have not checked it on a normal install.

https://www.ads-software.com/plugins/omit-parent-theme-page-templates/

This plugin will remove the templates from the Page edit screen, but the templates can still be accessed through the “Quick Edit” section when viewing all pages.

I reference the support docs for information, which is why I am posting this so others can be aware, it could be a drawback or an asset depending on how you are using it.

https://www.ads-software.com/extend/plugins/omit-parent-theme-page-templates/