Admin panelinden banner eklerken kaydettiğimde beyaz sayfada bu hatayı alıyorum sebebi nedir. Notice: Undefined index: sort_order in /home/cucuze/public_html/admin/model/design/banner. php on line 37Warning: Cannot modify header information - headers already sent by (output started at /home/cucuze/public_html/admin/index. php:84) in /home/cucuze/public_html/system/library/response. php on line 12 Versiyon 2.0