Error when uninstalling plugin

Hello,

I downloaded a plugin and then chose to deatctivate and delete. The plugin is called Social Web Suite – Social Media Auto Post, Auto Publish and Schedule.

WordPress is showing it as “deleting” but I recevied and error message. The error messages reads… Deletion failed: Fatal error: Uncaught Error: Undefined constant "WP_UNINSTALL_PLUGIN" in /var/www/wp-content/plugins/social-web-suite/includes/libs/class-socialwebsuite-setup.php:92 Stack trace: #0 /var/www/wp-content/plugins/social-web-suite/includes/class-socialwebsuite.php(160): SocialWebSuite_Setup::uninstall() #1 /var/www/wp-includes/class-wp-hook.php(324): SocialWebSuite::uninstall_plugin(”) #2 /var/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(”, Array) #3 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /var/www/wp-admin/includes/plugin.php(1269): do_action(‘uninstall_socia…’) #5 /var/www/wp-admin/includes/plugin.php(960): uninstall_plugin(‘social-web-suit…’) #6 /var/www/wp-admin/includes/ajax-actions.php(4748): delete_plugins(Array) #7 /var/www/wp-includes/class-wp-hook.php(324): wp_ajax_delete_plugin(”) #8 /var/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(”, Array) #9 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #10 /var/www/wp-admin/admin-ajax.php(188): do_action(‘wp_ajax_delete-…’) #11 {main} thrown in /var/www/wp-content/plugins/social-web-suite/includes/libs/class-socialwebsuite-setup.php on line 92 There has been a critical error on this website.Learn more about troubleshooting WordPress.

can you please assist.

thank you.