/CRX/DE lite console doesn't shows tree nodes Hierarchy

Statement : CRX/DE lite console shows Blank.

Solution :

1. Go to the FLeix console  /system/console/configMgr 
2. Search for config "Apache Sling DavEx Servlet" 
3. And set /server to /crx/server
4. Save the changes.
5. go back the crx/de lite console and vlaidate.

Reference URL : https://docs.adobe.com/docs/en/aem/6-1/administer/security/security-checklist/enabling-crxde-lite.html

Note : running AEM in Production Ready Mode will effectively disable access to CRXDE Lite on author instances.