Update utils/llms.py

utils/llms.py

@@ -161,6 +161,7 @@ def gpt4stream(messages,model,api_keys):
                     cunk=cunk+(part.choices[0].delta.content or "")
                     if helper.stopped: 
                         helper.stopped=False
+                        helper.q.put_nowait("END") 
                         break 
                     if "```json" not in cunk or "```" not in cunk:
                         helper.q.put_nowait(part.choices[0].delta.content or "")