Will it be updated for php 7.2

Hey, I have tried to install php. 7.2 but obviously it does not really work with this theme so I went back to php 5.6. I got this message on my website: Warning: Parameter 2 to qtranxf_postsFilter() expected to be a reference, value given in /customers/d/f/6/wasseraktien.net/httpd.www/wordpress/wp-includes/class-wp-hook.php on line 286 My question: Do you update this theme for php7.2? My website: wasseraktien.net Best Regards, Ben