Fatal error: Uncaught Error: Call to undefined function is_plugin_active() in /home/universidad/public_html/wp-content/plugins/oval-mooc/functions.php:2 Stack trace: #0 /home/universidad/public_html/wp-content/plugins/oval-mooc/oval-mooc.php(19): require_once() #1 /home/universidad/public_html/wp-settings.php(526): include_once('/home/universid...') #2 /home/universidad/public_html/wp-config.php(81): require_once('/home/universid...') #3 /home/universidad/public_html/wp-load.php(50): require_once('/home/universid...') #4 /home/universidad/public_html/wp-blog-header.php(13): require_once('/home/universid...') #5 /home/universidad/public_html/index.php(25): require('/home/universid...') #6 {main} thrown in /home/universidad/public_html/wp-content/plugins/oval-mooc/functions.php on line 2