Fatal error: Uncaught ValueError: Unknown format specifier "a" in /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-content/plugins/ut-portfolio/classes/post-types/class-portfolio.php:87
Stack trace:
#0 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-content/plugins/ut-portfolio/classes/post-types/class-portfolio.php(87): sprintf('Search %a', 'UT Portfolios')
#1 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-includes/class-wp-hook.php(307): UT_Portfolio->register_post_type('')
#2 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#3 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#4 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-settings.php(598): do_action('init')
#5 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-config.php(76): require_once('/customers/3/a/...')
#6 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-load.php(50): require_once('/customers/3/a/...')
#7 /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-blog-header.php(13): require_once('/customers/3/a/...')
#8 /customers/3/a/8/bifrostproductions.dk/httpd.www/index.php(17): require('/customers/3/a/...')
#9 {main}
  thrown in /customers/3/a/8/bifrostproductions.dk/httpd.www/wp-content/plugins/ut-portfolio/classes/post-types/class-portfolio.php on line 87