Fatal error: Uncaught Error: Call to undefined function get_cat_display_name() in /var/www/piwigo/include/section_init.inc.php:228
Stack trace:
#0 /var/www/piwigo/picture.php(11): include()
#1 {main}
  thrown in /var/www/piwigo/include/section_init.inc.php on line 228