Update app.py

app.py

@@ -25,7 +25,7 @@ client = OpenAI(
 
 def clean_json_string(json_str):
     # Strip spaces and '}' from the end, then add back a single '}'
-    return re.sub(r'[ }\s]+$', '', json_str) + '}'
+    return re.sub(r'[ ,}\s]+$', '', json_str) + '}'
 
 def complation(history, model, system_prompt, tools=None):
     messages = [{"role": "system", "content": system_prompt}]