Update app.py

app.py

@@ -167,14 +167,14 @@ def chat_completions():
     if d.get('stream'):
         def gen():
             cid = f"chatcmpl-{uuid.uuid4().hex[:24]}"
-            yield f"data: {json.dumps({'id': cid, 'object': 'chat.completion.chunk', 'choices': [{'delta': {'role': 'assistant'}}]})}\n\n"
+            yield f"data: {json.dumps({'id': cid, 'object': 'chat.completion.chunk', 'choices': [{'index': 0, 'delta': {'role': 'assistant'}}]})}\n\n"
             with requests.post(f"{COGNIX_BASE_URL}/api/chat", json=payload, headers=get_headers(), stream=True) as r:
                 for line in r.iter_lines(decode_unicode=True):
                     if not line: continue
                     cont, pty = parse_cognix_stream_chunk(line)
                     if pty == "stop": break
                     if cont:
-                        yield f"data: {json.dumps({'id': cid, 'object': 'chat.completion.chunk', 'choices': [{'delta': {'content': cont}}]})}\n\n"
+                        yield f"data: {json.dumps({'id': cid, 'object': 'chat.completion.chunk', 'choices': [{'index': 0, 'delta': {'content': cont}}]})}\n\n"
             yield "data: [DONE]\n\n"
         return Response(gen(), content_type='text/event-stream')