We already have the default for closedMessage to be null in the model. Removing the passing of a blank closedMEssage.

client/coral-framework/actions/config.js

@@ -48,6 +48,6 @@ export const updateOpenStatus = status => dispatch => {
     dispatch(updateOpenStream({closedAt: null}));
   } else {
     dispatch(closeStream());
-    dispatch(updateOpenStream({closedAt: new Date().getTime(), closedMessage: ''}));
+    dispatch(updateOpenStream({closedAt: new Date().getTime()}));
   }
 };

routes/api/asset/index.js

@@ -94,8 +94,8 @@ router.put('/:asset_id/status', (req, res, next) => {
   const id = req.params.asset_id;
 
   const {
-    closedAt = null,
-    closedMessage = null
+    closedAt,
+    closedMessage
   } = req.body;
 
   Asset