Loading error

I report this error thince install of 8.0.2 yesterday

[Wed May 01 17:01:09.017460 2019] [:error] [pid 46772] [client 192.168.1.110:11173] PHP Fatal error: Can't use method return value in write context in /var/www/html/projeqtor/model/EmployeeManagerMain.php on line 560, referer: projeqtor.quanta-medical.com/view/main.php

I correct error by

public function hasManager($actual=true, $includeLeaveAdmin) {
$ret = $this->getManager($actual,$includeLeaveAdmin);
return(empty($ret)?false:true);
// return (empty($this->getManager($actual,$includeLeaveAdmin))?false:true);
}

Thanks

PHP Version 5.4.16 on CENTOS 7, updated yesterday