Moodle-Behat-ZombieJS (moodle.org JS errors)

gistfile1.txt

Zombie: 301 => https://moodle.org/
Zombie: GET https://moodle.org/ => 200
Zombie: GET https://moodle.org/theme/javascript.php/moodleofficial/1385121489/footer => 200
Zombie: GET https://moodle.org/lib/javascript.php/1385121489/lib/javascript-static.js => 200
Zombie: GET https://moodle.org/theme/yui_combo.php?rollup/1385121489/mcore-min.js => 200
Zombie: GET https://moodle.org/theme/yui_combo.php?rollup/3.13.0/yui-moodlesimple-min.js => 200
Zombie: Cannot read property 'parentNode' of undefined TypeError: Cannot read property 'parentNode' of undefined
    at https://moodle.org/:10:58
    at https://moodle.org/:11:5
    in https://moodle.org/
Zombie: Cannot read property 'className' of null TypeError: Cannot read property 'className' of null
    at https://moodle.org/:3:14
    in https://moodle.org/
Zombie: Cannot call method 'delegate' of null TypeError: Cannot call method 'delegate' of null
    at Object.initLoader (/theme/yui_combo.php:22:204)
    at https://moodle.org/:6:104
    at [object Object]._notify (/theme/yui_combo.php:2:41279)
    at /theme/yui_combo.php:2:41006
    at [object Object]._notify (/theme/yui_combo.php:2:41279)
    at /theme/yui_combo.php:2:42205
    at [object Object]._use (/theme/yui_combo.php:2:43061)
    at [object Object].use (/theme/yui_combo.php:2:40983)
    at https://moodle.org/:6:43
    at [object Object]._notify (/theme/yui_combo.php:2:41279)
    in https://moodle.org/
Cannot call method 'delegate' of null