jquery_update.js?v=0.0.1:2 Uncaught TypeError: Cannot read property 'prototype' of undefined

原来是 commerce_ajax_cart 惹的祸. 详情/patch 请看 https://www.drupal.org/node/2280465

chrome_2016-11-06_23-28-29

7.x-1.x-dev 已经修复此问题.

drush dl commerce_ajax_cart-7.x-1.x-dev
drush updb

果然错误不见了.