更新后 /lib/Varien/Object.php 中的方法无效，导致维护模式

Question

我刚刚更新了一些模块，现在我的网上商店一直显示维护页面，而根文件夹中没有maintenance.flag 文件。

我检查了 /var/log 并在 exception.log 中不断显示此错误：

2015-09-30T10:33:15+00:00 ERR (3): 
exception 'Varien_Exception' with message 'Invalid method Itoffshore_Products_Block_Price::callParentToHtml(Array
(
)
)' in /home/users/amanvftp/amanvida.eu/lib/Varien/Object.php:653
Stack trace:
#0 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Catalog/Block/Product/Abstract.php(398): Varien_Object->__call('callParentToHtm...', Array)
#1 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Catalog/Block/Product/Abstract.php(398): Itoffshore_Products_Block_Price->callParentToHtml()
#2 /home/users/amanvftp/amanvida.eu/app/design/frontend/default/aman-mobile/template/catalog/product/view.phtml(62): Mage_Catalog_Block_Product_Abstract->getTierPriceHtml()
#3 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Template.php(241): include('/home/users/ama...')
#4 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...')
#5 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#6 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#7 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#8 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
#9 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#10 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#11 /home/users/amanvftp/amanvida.eu/app/design/frontend/default/aman-mobile/template/page/1column.phtml(59): Mage_Core_Block_Abstract->getChildHtml('content')
#12 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Template.php(241): include('/home/users/ama...')
#13 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/defaul...')
#14 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#15 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#16 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#17 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#18 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Catalog/Helper/Product/View.php(147): Mage_Core_Controller_Varien_Action->renderLayout()
#19 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Catalog/controllers/ProductController.php(132): Mage_Catalog_Helper_Product_View->prepareAndRender(332, Object(Mage_Catalog_ProductController), Object(Varien_Object))
#20 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_ProductController->viewAction()
#21 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view')
#22 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#23 /home/users/amanvftp/amanvida.eu/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#24 /home/users/amanvftp/amanvida.eu/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#25 /home/users/amanvftp/amanvida.eu/index.php(94): Mage::run('', 'store')
#26 {main}

当我检查 Object.php 文件时，我确实注意到 callParentToHTML 方法不存在。根据文档，它不应该存在。

http://doc-magento.com/nav.html?lib/Varien/Object.php.source.html

1. 我该如何解决这个问题？
2. 这是我的网站显示维护页面的原因还是我应该深入挖掘？我将如何解决导致此问题的问题。（有趣的是，维护页面仅显示产品页面和购物车，而不显示主页和类别页面。）

Answer 1

看来你有一个名为 Itoffshore_Products 包含这个块 Itoffshore_Products_Block_Price 并且该块不包含该方法 callParentToHtml.
您可以尝试的第一件事是将其添加到上面提到的块中

protected function callParentToHtml()
{
    return $this->toHtml();
}

清除缓存并看看会发生什么。
如果这不起作用，请联系扩展开发人员寻求支持。