fix(course_builder): include resourcelib.php for course structure handling

Author: allanhaggett

classes/sync/course_builder.php

@@ -20,6 +20,7 @@
 
 require_once($CFG->dirroot . '/course/lib.php');
 require_once($CFG->dirroot . '/course/modlib.php');
+require_once($CFG->dirroot . '/lib/resourcelib.php');
 
 /**
  * Handles creating and updating Moodle course structure from repo data.