Update app.py

app.py

@@ -225,9 +225,9 @@ if 'context_memory' not in st.session_state:
     st.session_state.context_memory = []
 
 def submit():
-    # if not st.session_state.query_input:
-    #     st.warning("⚠️ กรุณาระบุคำถาม")
-    #     return
+    if not st.session_state.query_input:
+        st.warning("⚠️ กรุณาระบุคำถาม")
+        return
 
     user_query = st.session_state.query_input.strip()  # Strip unnecessary spaces
     st.session_state.query_input = ""  # Clear input