Fatal error: Uncaught Error: Call to undefined function mb_strpos() in /var/www/piwigo/include/functions_category.inc.php:205
Stack trace:
#0 /var/www/piwigo/include/functions_url.inc.php(557): get_cat_info()
#1 /var/www/piwigo/include/section_init.inc.php(115): parse_section_url()
#2 /var/www/piwigo/picture.php(11): include('...')
#3 {main}
thrown in /var/www/piwigo/include/functions_category.inc.php on line 205