Wealthsimple Tax having the same problem so it may not be Turbotax.
https://www.reddit.com/r/Wealthsimple/comments/1jmtdhl/tax_filing_with_capital_gains_and_netfile_err...
And Ufile as well.
https://community.ufile.ca/topic/24891-netfile-reje[product key removed]/
