error with php 8.1

[omidxplimbo]

hi i installed php 8.1 and upgraded laravel version to 8.7 when i run composer install getting this error in utils.php file in vendor (utils.php not class just php file) :

Fatal error: Unparenthesized a ? b : c ? d : e is not supported. Use either (a ? b : c) ? d : e or a ? b : (c ? d : e) in /home/omid/Desktop/fanap-upgrade2/rad-api/vendor/digiaonline/graphql/src/Language/utils.php on line 167