Fatal Error Cannot redeclare nxs_noLiGrps()

Hi support team,

Fatal Error after activating plugin after migration to new server I am getting this

Fatal error: Cannot redeclare nxs_noLiGrps() (previously declared in /home/worldcheckin/public_html/wci/blog_de/wp-content/plugins/social-networks-auto-poster-facebook-twitter-g/inc/nxs_snap_class.php:38) in /home/worldcheckin/public_html/wci/blog_de/wp-content/plugins/social-networks-auto-poster-facebook-twitter-g/inc/nxs_snap_class.php on line 38

Please advice what to do to solve this problem, may there is a missing php extension to be activated???

Regards, Alex

https://wordpress.org/plugins/social-networks-auto-poster-facebook-twitter-g/