Update app.py

app.py

@@ -1082,7 +1082,7 @@ def chat_response_stream_multiturn(
         message, history, sys_prompt=system_prompt
     )
 
-    if len(tokenizer.encode(full_prompt, add_special_tokens=False)) >= 1000:
+    if len(tokenizer.encode(full_prompt, add_special_tokens=False)) >= 4050:
         raise gr.Error(f"Conversation or prompt is too long, please clear the chatbox or try shorter input.")
 
     sampling_params = SamplingParams(