fix json read error

request_llm/bridge_chatgpt.py

@@ -184,7 +184,7 @@ def predict(inputs, llm_kwargs, plugin_kwargs, chatbot, history=[], system_promp
                 return
             
             chunk_decoded = chunk.decode()
-            if is_head_of_the_stream and (r'"object":"error"' not in chunk_decoded) and (r"choices" not in chunk_decoded):
+            if is_head_of_the_stream and (r'"object":"error"' not in chunk_decoded) and (r"content" not in chunk_decoded):
                 # 数据流的第一帧不携带content
                 is_head_of_the_stream = False; continue