Call to a member function relationLoaded() on null

[AymanAlexanRezk]

C:\laragon\www\ecommerce\vendor\tcg\voyager\src\Traits\VoyagerUser.php

Symfony \ Component \ Debug \ Exception \ FatalThrowableError (E_ERROR) Call to a member function relationLoaded() on null

C:\laragon\www\ecommerce\vendor\tcg\voyager\src\Traits\VoyagerUser.php

    return true;
}

private function loadRolesRelations()
{
    if (!$this->relationLoaded('role')) {
        $this->load('role');
    }

    if (!$this->relationLoaded('roles')) {
        $this->load('roles');
    }
}

private function loadPermissionsRelations()
{
    $this->loadRolesRelations();

    if (!$this->role->relationLoaded('permissions')) {
        $this->role->load('permissions');
        $this->load('roles.permissions');
    }
}

}

Arguments "Call to a member function relationLoaded() on null"