Fatal error: Uncaught Error: Call to undefined function imagecreatefromwebp() in /home/wwwroot/yishu/phpcms/libs/classes/image.class.php:102 Stack trace: #0 /home/wwwroot/yishu/phpcms/libs/functions/global.func.php(1370): image->thumb('/home/wwwroot/y...', '/home/wwwroot/y...', 150, 150, '', 1) #1 /home/wwwroot/yishu/phpcms/modules/content/rss.php(58): thumb('http://www.yish...', 150, 150) #2 /home/wwwroot/yishu/phpcms/libs/classes/application.class.php(31): rss->init() #3 /home/wwwroot/yishu/phpcms/libs/classes/application.class.php(19): application->init() #4 /home/wwwroot/yishu/phpcms/base.php(126): application->__construct() #5 /home/wwwroot/yishu/phpcms/base.php(77): pc_base::_load_class('application', 'libs/classes', 1) #6 /home/wwwroot/yishu/phpcms/base.php(68): pc_base::load_sys_class('application') #7 /home/wwwroot/yishu/index.php(15): pc_base::creat_app() #8 {main} thrown in /home/wwwroot/yishu/phpcms/libs/classes/image.class.php on line 102