Fatal error: Uncaught Error: Non-static method TL_Latest_News_Widget_Utils::define_constants() cannot be called statically in /customers/9/1/0/fastaero.be/httpd.www/wp-content/plugins/latest-news-widget/latest-news-widget.php:33 Stack trace: #0 /customers/9/1/0/fastaero.be/httpd.www/wp-settings.php(409): include_once() #1 /customers/9/1/0/fastaero.be/httpd.www/wp-config.php(90): require_once('/customers/9/1/...') #2 /customers/9/1/0/fastaero.be/httpd.www/wp-load.php(50): require_once('/customers/9/1/...') #3 /customers/9/1/0/fastaero.be/httpd.www/wp-blog-header.php(13): require_once('/customers/9/1/...') #4 /customers/9/1/0/fastaero.be/httpd.www/index.php(17): require('/customers/9/1/...') #5 {main} thrown in /customers/9/1/0/fastaero.be/httpd.www/wp-content/plugins/latest-news-widget/latest-news-widget.php on line 33