Uncaught ReferenceError

Was working well not sure what has changed. Works on mobile though?!

Uncaught ReferenceError: new_gray is not defined
    at animateFeature (jquery.featureCarouselslider.js?ver=2.2.8:349)
    at move (jquery.featureCarouselslider.js?ver=2.2.8:473)
    at initiateMove (jquery.featureCarouselslider.js?ver=2.2.8:502)
    at s.fn.init.next (jquery.featureCarouselslider.js?ver=2.2.8:554)
    at wds_call_change (wds_frontend.js?ver=2.2.8:628)
    at wds_call (wds_frontend.js?ver=2.2.8:639)
    at wds_frontend.js?ver=2.2.8:648

Thank you!

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