Added escaping for angle bracketts

app.py

@@ -44,7 +44,8 @@ def model_chat(query: Optional[str], history: Optional[History]) -> Generator[Tu
  full_response = message
  for completion in gen:
  text = completion.choices[0].text
- full_response += text or ''
+ if text:
+ full_response += text.replace('<', '&lt;').replace('>', '&gt;') or ''
  yield full_response
  
 def create_stream_fn(orig_stream_fn):