New Events Issues Detected for Site - How to Fix
Did you receive an email from Google that said you have new events issues detected for site "yourwebsite.com."? This video shows you how to fix that issue.
To solve the issue you need to enter the information about your event that Google says is missing. For instance, you may need to enter an event location or start date. This can usually be done in your website's content management system (CMS). If that doesn't work, you'll need to contact your web developer to make sure the structured data on your website is implemented correctly.
https://developers.google.com/search/...