Not works with PHP 7.2

[sbooker]

Uncaught PHP Exception ErrorException:
"Warning: get_class() expects parameter 1 to be object, null given" at /opt/app/vendor/glavweb/security-bundle/Security/Authorization/Voter/AccessVoter.php line 104 {"exception":"[object] (ErrorException(code: 0): Warning: get_class() expects parameter 1 to be object, null given at /opt/app/vendor/glavweb/security-bundle/Security/Authorization/Voter/AccessVoter.php:104)"} []