MP4 URL or File download doesn't work at all in Moodle 3.3

[Jarvil]

Hello,

MP4 URL or file download-button doesn't work at all in Moodle 3.3, it just opens a blank white page with URL:

http://xxxxyyy/moodle/mod/eduplayer/view.php?id=503&forceDownload=1

and no error messages.

Tested on Moodle Moodle 3.3.5+ (Build: 20180427) & mod_eduplayer 1.3 (2017022300)