Switching Player settings in ezmedia field causes console error.

Steps:

1. Create CT with ezmedia field.
2. Create content item using that CT.
3. Upload valid video file.
4. Toggle any of the checkboxes: Display controls, Autoplay, Loop.

Actual result: Console error occurs:

Uncaught TypeError: Cannot read property 'classList' of null
    at EzMediaValidator.updateState (ezplatform-admin-ui-content-edit-parts-js.js:9304)
    at EzMediaValidator.validateField (ezplatform-admin-ui-content-edit-parts-js.js:5907)

Remarks: Please see attached.