Update app.py

app.py

@@ -105,7 +105,7 @@ with st.sidebar:
 user_prompt = st.chat_input("Ask me anything about the content of the PDF:")
 if user_prompt and uploaded_file:
     st.session_state.messages.append({'role': 'user', "content": user_prompt})
-    with st.chat_message("user", avatar=".웃"):
+    with st.chat_message("user", avatar="웃"):
         st.write(user_prompt)
 
 # Generate a new response if last message is not from assistant