禅知：V6.1

PHP 7

微信设置成功后，提示“微信功能需要启用会员模块，是否开启？ ”，点击“确认”按钮后，系统报错：

Fatal error : Uncaught Error: Call to undefined function curl_version() in D:\xampp\www\chanzhieps\system\module\wechat\view\admin.html.php:16 Stack trace: #0 D:\xampp\www\chanzhieps\system\framework\control.class.php(389): include() #1 D:\xampp\www\chanzhieps\system\framework\control.class.php(303): control->parseDefault('wechat', 'admin') #2 D:\xampp\www\chanzhieps\system\framework\control.class.php(408): control->parse('wechat', 'admin') #3 D:\xampp\www\chanzhieps\system\module\wechat\control.php(102): control->display() #4 D:\xampp\www\chanzhieps\system\framework\base\router.class.php(1656): wechat->admin() #5 D:\xampp\www\chanzhieps\system\framework\router.class.php(336): baseRouter->loadModule() #6 D:\xampp\www\chanzhieps\www\admin.php(45): router->loadModule() #7 {main} thrown in D:\xampp\www\chanzhieps\system\module\wechat\view\admin.html.php  on line  16

请问各位同学，这是什么原因引起的呢？感激不尽~~