Timely Calendar not showing Google Map

I recommend asking at https://www.ads-software.com/support/plugin/all-in-one-event-calendar/#new-post so the plugin’s developers and support community can help you with this.

@sterndata is absolutely correct in referring you to the calendar support community however a common reason for your error is that you do not have a Google maps api key and a billing account setup. Both are required to use Google maps on a website.