The plugin does not have a valid header

I am getting this error when I try to activate the plugin from the “Add Plugins” page. The activation page path is /wp-admin/plugins.php?_wpnonce=e7f3bcc8f2&action=activate&plugin=rest-manager/lib/rest-manager.php

However, it does work if I activate from the “Plugins” page.

With plugin installed I can see the “Rest Manager” options page at /wp-admin/options-general.php?page=settings_rest-manager

However, if I visit my website’s homepage I get a fatal PHP error.

Fatal error: Uncaught Error: Call to undefined function is_user_logged_in() in C:\wamp64\www\wordpress.dev\wp-includes\class-wp-query.php on line 2352

It seems to fail at Rest_Manager_Request->request_filter()