Clear inputs on model change

app.py

@@ -4,6 +4,7 @@ import os
 import boto3
 from datetime import datetime
 import pandas as pd
+from copy import copy
 
 from utils import generate, send_to_s3
 from models import get_tinyllama, get_qwen2ins1b, response_tinyllama, response_qwen2ins1b
@@ -55,11 +56,9 @@ def model_regen(content, chat_history, model_type: str):
     
     gen = MODEL_LIB[model_type]
 
-    msg = chat_history[-1][0]
-    chat_history = chat_history[:-1]
-    chat_history.append([msg])
+    msg = copy(chat_history[-1][0])
 
-    return gen(content, chat_history)
+    return gen(msg, chat_history[:-1])
 
 def clear_chat():
     return '', []