extbase还原已删除对象失败

无法还原已删除的对象(deleteAction)(restoreAction),导致异常:

属性路径“”处的属性映射时出现异常:找不到标识为“1”的对象。

控制器:

/**
 * action delete
 *
 * @param \EXAPOINT\Exacallmanagement\Domain\Model\Calls $calls
 * @return void
 */
public function deleteAction(\EXAPOINT\Exacallmanagement\Domain\Model\Calls $calls) {
    $this->callsRepository->remove($calls);
    $this->flashMessageContainer->add('Call gelöscht.');
    $this->redirect('list');
}


/**
 * action restore
 *
 * @param \EXAPOINT\Exacallmanagement\Domain\Model\Calls $calls
 * @return void
 */
public function restoreAction(\EXAPOINT\Exacallmanagement\Domain\Model\Calls $calls) {
    $calls->setDeleted(0);
    $this->callsRepository->update($calls);
    $this->redirect('list');
}

型号:

/**
 * @var \integer
 */
protected $deleted;

/**
 * @return integer $deleted
 */
public function getDeleted() {
    return $this->deleted;
}

/**
 * @param integer $deleted
 * @return void
 */
public function setDeleted($deleted) {
    $this->deleted = $deleted;
}

问题的根源是否是存储库没有“看到”已删除的对象?最好的方法是什么?