Update app.py

app.py

@@ -490,14 +490,14 @@ def handsome_chat_completions():
                                                 if first_reasoning_chunk:
                                                     reasoning_chunk = f"<think>\n{reasoning_chunk}"
                                                     first_reasoning_chunk = False
-                                                yield f"data: {json.dumps({'choices': [{'delta': {'content': reasoning_chunk, 'reasoning_content': null}, 'index': 0}]})}\n\n"
+                                                yield f"data: {json.dumps({'choices': [{'delta': {'content': reasoning_chunk, 'reasoning_content': "null"}, 'index': 0}]})}\n\n"
                                                 
                                             if delta.get("content") is not None:
                                                 if not first_reasoning_chunk:
                                                     reasoning_chunk = f"\n</think>\n"
-                                                    yield f"data: {json.dumps({'choices': [{'delta': {'content': reasoning_chunk, 'reasoning_content': null}, 'index': 0}]})}\n\n"
+                                                    yield f"data: {json.dumps({'choices': [{'delta': {'content': reasoning_chunk, 'reasoning_content': "null"}, 'index': 0}]})}\n\n"
                                                     first_reasoning_chunk = True
-                                                yield f"data: {json.dumps({'choices': [{'delta': {'content': delta["content"], 'reasoning_content': null}, 'index': 0}]})}\n\n"
+                                                yield f"data: {json.dumps({'choices': [{'delta': {'content': delta["content"], 'reasoning_content': "null"}, 'index': 0}]})}\n\n"
 
                                     except (KeyError, ValueError, json.JSONDecodeError) as e:
                                         continue