Warning: Attempt to read property "dirroot" on null in C:\Apache24\htdocs\moodle\grade\grading\form\guide\classes\grades\grader\gradingpanel\external\store.php on line 41

Warning: require_once(/grade/grading/form/guide/lib.php): Failed to open stream: No such file or directory in C:\Apache24\htdocs\moodle\grade\grading\form\guide\classes\grades\grader\gradingpanel\external\store.php on line 41

Fatal error: Uncaught Error: Failed opening required '/grade/grading/form/guide/lib.php' (include_path='.;C:\php\pear') in C:\Apache24\htdocs\moodle\grade\grading\form\guide\classes\grades\grader\gradingpanel\external\store.php:41 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\grade\grading\form\guide\classes\grades\grader\gradingpanel\external\store.php on line 41