Error after upgrading ecommerce kickstart is breaking my start
The only reason commerce_info_fields() should have gone AWOL is if the commerce.module file was removed from your server or the module was somehow disabled during your update process. Check those two things: if it's missing, put it back. If it got disabled, try to re-enable it. No clue what about a drush based update would have caused the issue, but I also am unfamiliar with how drush updates distributions. For reference, we document how to update here:

https://drupalcommerce.org/commerce-kickstart-2/install