AdobeExperienceSDK: Core - collectData: Could not dispatch generic data event, data is null or empty.

Seeing following error in logs, and wanted to check if data is being sent am missing something

Code (Android Java)
import com.adobe.marketing.mobile.ExperienceEvent;
import com.adobe.marketing.mobile.Edge;
 
ExperienceEvent experienceEvent = new ExperienceEvent.Builder()
.setXdmSchema(xdmData)
.build();
Edge.sendEvent(experienceEvent, null);
 
Documentation: https://aep-sdks.gitbook.io/docs/getting-started/initialize-the-sdk