No such file exists!

This happens if the plugin is unable to create the functionality plugin file. This is usually due to how filesystem permissions are configured on the server.

Can I add it manually then? I tried uninstalling and re-installing, etc, but to no avail.

What do I need to do to correct this?

You can manually create it if you would like, but that’s the main reason for using this plugin.

In the wp-content/plugins folder of your site, create a file called functions.php. Use this for the file content:

<?php

/*
Plugin Name: Name of Site
Plugin URL: https://example.com
Description: A site-specific functionality plugin for Name of Site where you can paste your code snippets instead of using the theme's functions.php file
*/

Replace Name of Site and https://example.com with the appropriate text. Under this file content, you can put your PHP code snippets.

Thanks – that’s fine now.

Great! Hopefully I can work out a better way of showing when the file can’t be created in the future.