fatal error after plugin activation

Hi,
I got the error below from WordPress after turning on this plugin. We’re definitely interested in trying this plugin when it’s stable, so hopefully this is something that could be fixed with an update or something. Just let me know if there’s anything we should do on our side to fix this.

Thanks!
Matt

Fatal error: Uncaught ArgumentCountError: Too few arguments to function CommentMentionMain::cmt_mntn_mail_subject(), 0 passed in /home/customer/www/mysitename.com/public_html/wp-content/plugins/comment-mention/app/admin/class-admin-comment-mention.php on line 73 and exactly 1 expected in /home/customer/www/mysitename.com/public_html/wp-content/plugins/comment-mention/app/main/class-comment-mention.php:424 Stack trace: #0 /home/customer/www/mysitename.com/public_html/wp-content/plugins/comment-mention/app/admin/class-admin-comment-mention.php(73): CommentMentionMain->cmt_mntn_mail_subject() #1 /home/customer/www/mysitename.com/public_html/wp-includes/class-wp-hook.php(324): CommentMentionAdmin->cmt_mntn_admin_settings(”) #2 /home/customer/www/mysitename.com/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(”, Array) #3 /home/customer/www/mysitename.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /home/customer/www/mysitename.com/public_html in /home/customer/www/mysitename.com/public_html/wp-content/plugins/comment-mention/app/main/class-comment-mention.php on line 424
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