WooCommerce Sensei LMS - How to change slugs of /course and /lesson

functions.php

<?php

add_filter( 'sensei_course_slug', 'yanco_sensei_course_slug', 1000 );
	function yanco_sensei_course_slug( ) {
		return 'kursus';
	}

	add_filter( 'sensei_lesson_slug', 'yanco_sensei_lesson_slug', 1000 );
	function yanco_sensei_lesson_slug() {
		return 'lektion';
	}