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Here is the error. Any ideas?

An error of type E_ERROR was caused in line 113 of the file /var/www/wp-content/plugins/buddypress-followers/_inc/bp-follow-widgets.php. Error message: Uncaught Error: Call to undefined function create_function() in /var/www/wp-content/plugins/buddypress-followers/_inc/bp-follow-widgets.php:113
Stack trace:
#0 /var/www/wp-content/plugins/buddypress-followers/bp-follow-core.php(71): require()
#1 /var/www/wp-content/plugins/buddypress-followers/bp-follow-core.php(46): BP_Follow_Component->includes()
#2 /var/www/wp-content/plugins/buddypress-followers/bp-follow-core.php(347): BP_Follow_Component->__construct()
#3 /var/www/wp-includes/class-wp-hook.php(308): bp_follow_setup_component(”)
#4 /var/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#5 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#6 /var/www/wp-content/plugins/buddypress/bp-core/bp-core-dependency.php(333): do_action(‘bp_loaded’)
#7 /var/www/wp-includes/class-wp-hook.php(308): bp_loaded(”)
#8 /var/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#9 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#10 /var/www/wp-settings.php(480): do_action(‘plugins_loaded’)
#11 /var/www/wp-config.php(102): require_once(‘/var/www/wp-set…’)
#12 /var/www/wp-load.php(50): require_once(‘/var/www/wp-con…’)
#13 /var/www/wp-admin/admin.php(34): require_once(‘/var/www/wp-loa…’)
#14 /var/www/wp-admin/index.php(10): require_once(‘/var/www/wp-adm…’)
#15 {main}
thrown