Update chatllm.py

fix bug: get response

chatllm.py

@@ -91,7 +91,7 @@ class ChatLLM(LLM):
                 presence_penalty = 0,
                 frequency_penalty = 0
             )
-            result = response.choices[0].text
+            result = response['choices'][0]['message']['content']
             
             #  将当次的ai回复内容加入history
             self.history.append((prompt, result))