Fatal Error

Hi, getting this Fatal Error with new update:

Fatal error: Uncaught Error: Call to undefined function import_multiset_author() in /srv/users/serverpilot/apps/travel-bible/public/wp-content/plugins/yet-another-stars-rating/lib/admin/yasr-update-functions.php:65 Stack trace: #0 /srv/users/serverpilot/apps/travel-bible/public/wp-includes/class-wp-hook.php(286): yasr_update_version(”) #1 /srv/users/serverpilot/apps/travel-bible/public/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /srv/users/serverpilot/apps/travel-bible/public/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3 /srv/users/serverpilot/apps/travel-bible/public/wp-settings.php(327): do_action(‘plugins_loaded’) #4 /srv/users/serverpilot/apps/travel-bible/public/wp-config.php(37): require_once(‘/srv/users/serv…’) #5 /srv/users/serverpilot/apps/travel-bible/public/wp-load.php(37): require_once(‘/srv/users/serv…’) #6 /srv/users/serverpilot/apps/travel-bible/public/wp-admin/admin.php(31): require_once(‘/srv/users/serv…’) #7 /srv/users/serverpilot/apps/travel-bible/public in /srv/users/serverpilot/apps/travel-bible/public/wp-content/plugins/yet-another-stars-rating/lib/admin/yasr-update-functions.php on line 65