diff --git a/promptify/parser/parser.py b/promptify/parser/parser.py
index 2af9c91..f42e02d 100644
--- a/promptify/parser/parser.py
+++ b/promptify/parser/parser.py
@@ -234,14 +234,14 @@ def fit(self, json_str: str, max_completion_length: int = 5) -> Dict[str, Any]:
                 )
                 return {
                     "status": "completed",
-                    "object_type": type(output["completion"]),
-                    "data": output,
+                    "object_type": type(output),
+                    "data": {"completion": output, "suggestions": []},
                 }
             except Exception as e:
                 return {
                     "status": "failed",
                     "object_type": None,
-                    "data": {"error_message": str(e)},
+                    "data": {"completion": str(e)},
                 }
 
     def find_max_length(self, data_list: List[Any]) -> Dict[str, List[Any]]: