fix format problem

dbgpt/agent/resource/app.py

@@ -135,12 +135,10 @@ def is_async(self) -> bool:
         """Return whether the tool is asynchronous."""
         return True
 
-    async def execute(
-        self, *args, resource_name: Optional[str] = None, **kwargs
-    ) -> Any:
+    def execute(self, *args, resource_name: Optional[str] = None, **kwargs) -> Any:
         """Execute the resource."""
         if self.is_async:
-            raise RuntimeError("Async execution is not supported")
+            raise RuntimeError("Sync execution is not supported")
 
     async def async_execute(
         self,
@@ -156,8 +154,13 @@ async def async_execute(
             specific tool).
             **kwargs: The keyword arguments.
         """
-        user_input: str = kwargs.get("user_input")
-        parent_agent: ConversableAgent = kwargs.get("parent_agent")
+        user_input: Optional[str] = kwargs.get("user_input")
+        parent_agent: Optional[ConversableAgent] = kwargs.get("parent_agent")
+
+        if user_input is None:
+            raise RuntimeError("AppResource async execution user_input is None")
+        if parent_agent is None:
+            raise RuntimeError("AppResource async execution parent_agent is None")
 
         reply_message = await _start_app(
             self._app_code, user_input=user_input, sender=parent_agent