Update app.py

app.py

@@ -1214,11 +1214,14 @@ def show_theme_selection():
     cols = st.columns(4)
     
     # แสดงธีมในแต่ละ column
-    for idx, (col, theme) in enumerate(zip(cols, available_themes)):
+    for col, theme in zip(cols, available_themes):
         with col:
+            # ใช้ ID ของธีมเป็น key
+            button_key = f"select_theme_{theme['id']}"
+            
             if st.button(
                 f"{theme['icon']} {theme['name_th']}", 
-                key=f"theme_select_{idx}",  # ใช้ index เป็น key
+                key=button_key,
                 use_container_width=True
             ):
                 st.session_state.current_theme = theme['id']