Refurbished.nl

Fatal error: Uncaught InvalidArgumentException: $width must be numeric and greater than zero in /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/includes/classes/inc.gdthumb.php:242 Stack trace: #0 /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/includes/classes/class.media.php(167): GdThumb->adaptiveResize(NULL, NULL, '#ffffff') #1 /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/modules/slider/slider.functions.php(85): media->generateImage('https://ipad.ki...', Array) #2 /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/themes/refurbished/template_home.php(9): get_slider(1) #3 /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/includes/classes/class.template.php(301): include('/home/refurbish...') #4 /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/includes/classes/class.template.php(167): template->Parse('template_home.p...', false) #5 /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/includes/template_functions.php(418): template-> in /home/refurbish/domains/kieskeurig.refurbished.nl/public_html/includes/classes/inc.gdthumb.php on line 242