Map Not Loading

The map on my Contact page is not loading. I just get “loading map – please wait…”. There is also a link “click here for troubleshooting” underneath. I have deactivated all other plugins to see if there was a plugin conflict, but the problem still persisted. I have also tried switching to a new theme, Twenty Seventeen, but again, the problem still persisted. So I have no idea what the problem could be.

The link to my site and the page with the issue is: https://sttimsinhouston.com/contact/

Also, I am using version 3.12.1 of the plugin.