Google Search Console's rich result report could provide you with additional alerts. These alerts are regarding event-rich results errors for missing locations through structured data markup. This is possible it is not able to provide an address. Google posted this update on its website. They said, "Google will start enforcing the requirement of a location address in the event."
Here's what Google posted:
Google will start enforcing location requirements for events. For events marked as virtual-only (eventAttendanceMode = OnlineEventAttendanceMode), providing any physical locations will trigger a warning. For any event with a physical address, the address must be of type Place, not Postal Address, or it will be an error. Therefore you might see an increase in errors and warnings in Event items on your site.
The location of the event is crucial. Google explicitly states that you should provide the event's location to display these events in results properly. If the event is virtual, you can define the event location as being online with the "eventAttendanceMode = OnlineEventAttendanceMode" reference. If it's an in-person gathering, you must include a physically located address.
What are the Effects of Event-rich Results Errors for Missing Locations?
Event-rich results are the result of Google Search using your structured data from your event webpages and displays richer search snippets in the search results. Google stated that this might help to bring more interactive results through the display of your logo's description of the event. It also boosts the chances of being discovered and converted by enhancing click-through rates.
This is how these results might appear like:
If you're using an event schema for your pages, you could see a rise in warnings of the rich results report displays on Google Search Console. All you have to do is add the location information to your schema. Then verify the errors by using Search Console. Google seems to boost user experience by solving the issue of event-rich results errors for missing locations.
Learn more about resolving these issues through Search Console and this page.