Icons Disappearing

Can you provide the URL to your site?

https://php.radford.edu/~mbagrad/wordpress/

For some reason all those images point to https://php.radford.edu/~mbagrad/wordpress/wp-content/plugins/events-calendar/images/loading.gif

Can you try disabling the events calendar plugin and see if the images return?

Yes, disabling the events calendar plugin caused the images to return. Is there a way I can keep that widget without the icons disappearing?