Bad XML File, Check Syntax!

exception 'Exception' with message 'String could not be parsed as XML' in /var/www/html/Courses/2018-19/index.php:22 Stack trace: #0 /var/www/html/Courses/2018-19/index.php(22): SimpleXMLElement->__construct('') #1 {main}

Skipping Partial Output Below.