Update app_web.py

app_web.py

@@ -166,13 +166,15 @@ def render_chat():
             st.markdown(msg["content"])
 
     # Chat input
-    prompt = st.chat_input("Ask a question about your knowledge base...",
+    user_input = st.chat_input("Ask a question about your knowledge base...",
                             accept_file="multiple", 
                             file_type=["docx", "csv", "xlsx", "xls", "pdf", "rds", "rda", 
                                        "tsv", "sav", "dta", "txt", "md", "json", "do"]
                         )
 
-    if prompt:
+    if user_input.text:
+        prompt = user_input.text
+        uploaded_files = user_input.files
         # Show and store user message
         st.session_state.messages.append({"role": "user", "content": prompt})
         with st.chat_message("user"):