Warning: Constant ABSPATH already defined in /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-config.php on line 21

Fatal error: Uncaught Error: Call to undefined function create_function() in /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-content/plugins/mb-youtube-videos/mechabyte-youtube.php:22
Stack trace:
#0 /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-content/plugins/mb-youtube-videos/mechabyte-youtube.php(224): mechabyteYouTube->__construct()
#1 /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-settings.php(377): include_once('/customers/6/a/...')
#2 /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-config.php(22): require_once('/customers/6/a/...')
#3 /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-load.php(37): require_once('/customers/6/a/...')
#4 /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-blog-header.php(13): require_once('/customers/6/a/...')
#5 /customers/6/a/1/ericthiebaut.eu/httpd.www/index.php(4): require('/customers/6/a/...')
#6 {main}
  thrown in /customers/6/a/1/ericthiebaut.eu/httpd.www/wordpress/wp-content/plugins/mb-youtube-videos/mechabyte-youtube.php on line 22