The following provides instructions on how to update your installed version of TurboTax. There are instructions attached on how to manually update at the bottom of the page under "Related Information". Once you update your software, you should be able to complete your return.
* Please be aware the last day to file before CRA shuts down for their annual maintenance is January 25th, 2019. They will reopen on February 18th, 2019 and begin accepting NetFile transmissions for tax years 2015, 2016, 2017 & 2018 then.
https://turbotax.community.intuit.ca/replies/2647741
