Update app.py

app.py

@@ -3,6 +3,7 @@ import os
 os.system('pip install transformers SentencePiece')
 os.system('pip install torch')
 # pip install streamlit-chat 
+os.system('pip install streamlit --upgrade')
 os.system('pip install streamlit-chat')
 
 from transformers import T5Tokenizer, T5ForConditionalGeneration, AutoTokenizer