Fixed bug resulting in returning empty array instead of correct JSON-RPC response in case of error in JSON-RPC request.

Author: georgique

Action.php

@@ -175,10 +175,10 @@ public function runWithParams($params)
                 $response[] = $this->$renderMethod($executionResult, $request->id);
             }
             elseif ($request instanceof JsonRpcException) {
-                $this->renderError($request, $request->id);
+                $response[] = $this->renderError($request, $request->id);
             }
             else {
-                $this->renderError($request, null);
+                $response[] =  $this->renderError($request, null);
             }
         }