PHP Fatal Error: Uncaught ArgumentCountError

We are occasionally getting following fatal error (which doesn’t seem to affect everyday usage):

PHP Fatal error:  Uncaught ArgumentCountError: Too few arguments to function NgSurvey_Options::restore_revisions(), 1 passed in /var/www/html/wp-includes/class-wp-hook.php on line 309 and exactly 2 expected in /var/www/html/wp-content/plugins/ngsurvey/includes/init/class-ngsurvey-options.php:248
Stack trace:
#0 /var/www/html/wp-includes/class-wp-hook.php(309): NgSurvey_Options->restore_revisions(124346)
#1 /var/www/html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array)
#2 /var/www/html/wp-includes/plugin.php(474): WP_Hook->do_action(Array)
#3 /var/www/html/wp-includes/revision.php(437): do_action('wp_restore_post...', 124346, 199991)
#4 /var/www/html/wp-admin/revision.php(70): wp_restore_post_revision(199991)
#5 {main}
  thrown in /var/www/html/wp-content/plugins/ngsurvey/includes/init/class-ngsurvey-options.php on line 248