Installation error

[CipoCambodia]

Dear All,

Please help me to install the theme. I face the following issues:

Warning: Declaration of Admin_Page_Framework_Walker_Category_Checklist::start_el(&$strOutput, $oCategory, $intDepth, $arrArgs) should be compatible with Walker_Category::start_el(&$output, $category, $depth = 0, $args = Array, $id = 0) in C:\xampp\htdocs\wordpressIpdata\wp-content\themes\jeo-dev\inc\admin\admin-page-framework.php on line 2599