Warning: Undefined variable $db_images in /var/www/vhosts/iconicarchive.ch/httpdocs/iconiclimc/includes/filters/show_tree_structure.php on line 8

Fatal error: Uncaught Error: Call to a member function prepare() on null in /var/www/vhosts/iconicarchive.ch/httpdocs/iconiclimc/includes/filters/show_tree_structure.php:8
Stack trace:
#0 {main}
  thrown in /var/www/vhosts/iconicarchive.ch/httpdocs/iconiclimc/includes/filters/show_tree_structure.php on line 8