(‘application/json’) is not executable

Chrome is throwing errors and not displaying calendars:

Refused to execute script from ‘https://uvc.org/events/?ai1ec_js_widget=ai1ec_superwidget&render=true&callba…ype=jsonp&ai1ec=cat_ids~153&ai1ec_source=ai1ec_superwidget&_=1492796613422’ because its MIME type (‘application/json’) is not executable, and strict MIME type checking is enabled.

Example here: https://upstatejobs.org/upstate-ny-ecosystem-map/

Please advise.