SharePoint Event Web Part Doesn't Work

I found out that the Events web part requires the field "All Day Event" to have a value, either true or false to show the event (it is blank when we initially create the event). To update this field in Flow after creating the event, we need to use REST API using the "Send an HTTP request to SharePoint" action. Once you assign a value to the field, the event will show up in the Events web part. Please reference the below link (Mark Invites as Full Day Event section) for the steps to set the "All Day Event" field in Flow.

https://www.anupams.net/send-meeting-invites-sharepoint-online-calendar/