Warning: Constant ABSPATH already defined in /home/httpd/vhosts/rosqo.ch/httpdocs/wp-config.php on line 21

Fatal error: Uncaught Error: Undefined constant "mv_version" in /home/httpd/vhosts/rosqo.ch/httpdocs/wp-content/plugins/myVideo/myVideo.php:296
Stack trace:
#0 /home/httpd/vhosts/rosqo.ch/httpdocs/wp-settings.php(214): include_once()
#1 /home/httpd/vhosts/rosqo.ch/httpdocs/wp-config.php(22): require_once('/home/httpd/vho...')
#2 /home/httpd/vhosts/rosqo.ch/httpdocs/wp-load.php(27): require_once('/home/httpd/vho...')
#3 /home/httpd/vhosts/rosqo.ch/httpdocs/wp-blog-header.php(12): require_once('/home/httpd/vho...')
#4 /home/httpd/vhosts/rosqo.ch/httpdocs/index.php(17): require('/home/httpd/vho...')
#5 {main}
  thrown in /home/httpd/vhosts/rosqo.ch/httpdocs/wp-content/plugins/myVideo/myVideo.php on line 296