Warning: Constant ABSPATH already defined in /usr/www/users/advosa/wp-config.php on line 30

Fatal error: Uncaught Error: Call to undefined function create_function() in /usr/www/users/advosa/wp-content/plugins/shopp/core/library/Loader.php:69
Stack trace:
#0 /usr/www/users/advosa/wp-content/plugins/shopp/core/library/Loader.php(304): ShoppLoader::map(Array)
#1 /usr/www/users/advosa/wp-content/plugins/shopp/Shopp.php(35): require('/usr/www/users/...')
#2 /usr/www/users/advosa/wp-settings.php(371): include_once('/usr/www/users/...')
#3 /usr/www/users/advosa/wp-config.php(33): require_once('/usr/www/users/...')
#4 /usr/www/users/advosa/wp-load.php(37): require_once('/usr/www/users/...')
#5 /usr/www/users/advosa/wp-blog-header.php(13): require_once('/usr/www/users/...')
#6 /usr/www/users/advosa/index.php(17): require('/usr/www/users/...')
#7 {main}
  thrown in /usr/www/users/advosa/wp-content/plugins/shopp/core/library/Loader.php on line 69