Giving error

Its not working properly. Giving some errors

Notice: Undefined index: wpsr_digg_type in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/admin/wpsr-admin.php on line 390 Notice: Undefined index: wpsr_settings_bitlyusername in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/admin/wpsr-admin.php on line 452 Notice: Undefined index: wpsr_settings_bitlyapi in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/admin/wpsr-admin.php on line 453

Notice: Undefined index: nofollow in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/includes/wpsr-socialbuttons.php on line 443 Notice: Undefined index: nofollow in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/includes/wpsr-socialbuttons.php on line 443 Notice: Undefined index: nofollow in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/includes/wpsr-socialbuttons.php on line 443 Notice: Undefined index: nofollow in /var/www/vhosts/priorsrec.co.uk/httpdocs/blog/wp-content/plugins/wp-socializer/includes/wpsr-socialbuttons.php on line 44

Any Help ?

https://ww.wp.xz.cn/plugins/wp-socializer/