How do I fix the 'Console error after reindexing: “Cannot read property ‘autocomplete’ of undefined”' error in Magento?

This error indicates that the extension’s templates were not rendered. As these templates are rendered into the before_body_end block, you need to make sure that the Magento theme renders this block. 

If this block is rendered by the theme, you will then need to confirm that symlinks are enabled in Magento’s configuration.