Automated daily Denemo Debian build fails

[Andreas Schneider]

I have noticed that my automated Debian build fails since some time with
the error

core/menusystem.c: In function ‘menu_click’:
core/menusystem.c:883:3: error: format not a string literal and no
format arguments [-Werror=format-security]
  883 |   filepath2 = g_build_filename (get_user_data_dir (TRUE),
COMMANDS_DIR, "menus", myposition, NULL); g_print (filepath2);
      |   ^~~~~~~~~

The arrow points to filepath2. What is the matter there?

Andreas