Update app.py

app.py

@@ -37,8 +37,7 @@ header_buttons = pn.Column(sizing_mode='stretch_width', css_classes=['header-but
 def add_to_header(event):
     selected_option = filter_list.value
     if selected_option:
-        new_button = pn.widgets.Button(name=selected_option[0], width=130, sizing_mode='fixed')
-        header_buttons.append(new_button)
+        header_buttons.append(pn.widgets.Button(name=selected_option[0], width=130, sizing_mode='fixed'))
         filter_list.value = []  # Clear the selected option after adding it to the header
 
 # "+" button to trigger the addition to the header