How to fix the «Call to a member function addCrumb() on boolean in module-sales/Helper/Guest.php» failure?

dmitry_fedyuk · July 11, 2017, 11:29am

The problem method is \Magento\Sales\Helper\Guest::getBreadcrumbs():

magento/magento2/blob/2.1.7/app/code/Magento/Sales/Helper/Guest.php#L196-L217


/**
 * Get Breadcrumbs for current controller action
 *
 * @param \Magento\Framework\View\Result\Page $resultPage
 * @return void
 */
public function getBreadcrumbs(\Magento\Framework\View\Result\Page $resultPage)
{
    $breadcrumbs = $resultPage->getLayout()->getBlock('breadcrumbs');
    $breadcrumbs->addCrumb(
        'home',
        [
            'label' => __('Home'),
            'title' => __('Go to Home Page'),
            'link' => $this->_storeManager->getStore()->getBaseUrl()
        ]
    );
    $breadcrumbs->addCrumb(
        'cms_page',
        ['label' => __('Order Information'), 'title' => __('Order Information')]
    );
}

The failure is caused by an absence of the breadcrumbs block on the problem page.
It may be because of a bug in the used design theme.

To fix the issue, restore the breadcrumbs block for the problem page.
By default, the breadcrumbs block is added by the following code:

github.com

magento/magento2/blob/2.1.7/app/code/Magento/Theme/view/frontend/layout/default.xml#L95-L95


<block class="Magento\Theme\Block\Html\Breadcrumbs" name="breadcrumbs" as="breadcrumbs"/>