Fatal error: Uncaught exception 'Exception' with message 'Facebook needs the CURL PHP extension.' in /var/www/vhosts/emrsv.com/htdocs/application/libraries/facebook/src/base_facebook.php:19 Stack trace: #0 /var/www/vhosts/emrsv.com/htdocs/application/libraries/facebook/src/facebook.php(18): require_once() #1 /var/www/vhosts/emrsv.com/htdocs/application/models/facebook_model.php(12): include_once('/var/www/vhosts...') #2 /var/www/vhosts/emrsv.com/htdocs/system/core/Loader.php(303): Facebook_model->__construct() #3 /var/www/vhosts/emrsv.com/htdocs/application/libraries/auth_user.php(193): CI_Loader->model('Facebook_model') #4 /var/www/vhosts/emrsv.com/htdocs/application/controllers/login.php(10): Auth_user->signOut(1) #5 [internal function]: Login->index() #6 /var/www/vhosts/emrsv.com/htdocs/system/core/CodeIgniter.php(359): call_user_func_array(Array, Array) #7 /var/www/vhosts/emrsv.com/htdocs/index.php(201): require_once('/var/www/vhosts...') #8 {main} thrown in /var/www/vhosts/emrsv.com/htdocs/application/libraries/facebook/src/base_facebook.php on line 19