Need to override learnpress plugin themes on theme-child (I can’t do it)

I was trying to change some markup to this php file:
theme-child/learnpress/templates/loop/single-course/loop-section-item.php

1. Test adding this in first line of functions.php within theme-child:
<?php require_once get_stylesheet_directory() . ‘/learnpress/templates/loop/single-course/loop-section-item.php’; ?>

2. Test adding this in first line of functions.php within theme-child:
add_filter( ‘learn-press/override-templates’, function(){
return true;
} );

3. Test with both lines

Nothing works, HELP ME PLEASE