Warning: Constant ABSPATH already defined in /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-config.php on line 32

Fatal error: Uncaught Error: Undefined constant "headerfixedsocial" in /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-content/plugins/fixed-social-buttons/fixed-social.php:726
Stack trace:
#0 /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-settings.php(305): include_once()
#1 /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-config.php(35): require_once('/home/httpd/vho...')
#2 /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-load.php(37): require_once('/home/httpd/vho...')
#3 /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#4 /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/index.php(17): require('/home/httpd/vho...')
#5 {main}
  thrown in /home/httpd/vhosts/couleurs-du-paradis.ch/httpdocs/site/wp-content/plugins/fixed-social-buttons/fixed-social.php on line 726