Update app.py

app.py

@@ -124,7 +124,7 @@ async def proxy_openai_api(request: Request):
 
                 content = bytearray()
                 async for chunk in stream_response.aiter_bytes():
-                    if chunk.strip()
+                    if chunk.strip():
                         yield chunk.strip()
                         content.extend(chunk.strip())