bug fix so that managed channels could be enabled

Signed-off-by: Riya Saxena <[email protected]>

public/pages/utils/helpers.js

@@ -42,7 +42,7 @@ export function parseQueryStringAndGetDataSource(queryString) {
     const pair = param.split('=');
     params[pair[0]] = pair[1];
   }
-  return params.hasOwnProperty('dataSourceId') ? params['dataSourceId'] : undefined;
+  return params.hasOwnProperty('dataSourceId') ? params['dataSourceId'] || '' : undefined;
 }
 
 export function constructUrlFromDataSource(url) {