I'm currently working with php 7.2 and when I use get_the_content() or get_the_excerpt() outside of a single template, in the functions.php for example, I get the following Warning:
Warning: count(): Parameter must be an array or an object that implements Countable in /Applications/MAMP/htdocs/wordpress/wp-kona/wp-includes/post-template.php on line 284
What's wrong with it? Is it a wordpress core bug? Am I missing something.