Fatal error: Uncaught ValueError: Unknown format specifier "a" in /home/server917955/ftp/plantshop/plants/plantshop/wp-content/plugins/testimonials-by-woothemes/classes/class-woothemes-testimonials.php:87 Stack trace: #0 /home/server917955/ftp/plantshop/plants/plantshop/wp-content/plugins/testimonials-by-woothemes/classes/class-woothemes-testimonials.php(87): sprintf('Search %a', 'Testimonials') #1 /home/server917955/ftp/plantshop/plants/plantshop/wp-includes/class-wp-hook.php(287): Woothemes_Testimonials->register_post_type('') #2 /home/server917955/ftp/plantshop/plants/plantshop/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #3 /home/server917955/ftp/plantshop/plants/plantshop/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #4 /home/server917955/ftp/plantshop/plants/plantshop/wp-settings.php(557): do_action('init') #5 /home/server917955/ftp/plantshop/plants/plantshop/wp-config.php(90): require_once('/home/server917...') #6 /home/server917955/ftp/plantshop/plants/plantshop/wp-load.php(37): require_once('/home/server917...') #7 /home/server917955/ftp/plantshop/plants/plantshop/wp-blog-header.php(13): require_once('/home/server917...') #8 /home/server917955/ftp/plantshop/plants/plantshop/index.php(17): require('/home/server917...') #9 {main} thrown in /home/server917955/ftp/plantshop/plants/plantshop/wp-content/plugins/testimonials-by-woothemes/classes/class-woothemes-testimonials.php on line 87