Fatal error: Uncaught Error: Non-static method Improved_Simpler_CSS::init() cannot be called statically in /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/wp-content/plugins/imporved-simpler-css/improved-simpler-css.php:384 Stack trace: #0 /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/wp-settings.php(409): include_once() #1 /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/wp-config.php(96): require_once('/customers/4/0/...') #2 /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/wp-load.php(50): require_once('/customers/4/0/...') #3 /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/wp-blog-header.php(13): require_once('/customers/4/0/...') #4 /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/index.php(17): require('/customers/4/0/...') #5 {main} thrown in /customers/4/0/a/kunsteneendracht.be/httpd.www/wordpress/wp-content/plugins/imporved-simpler-css/improved-simpler-css.php on line 384