Double-check your T5008 form. Make sure box 20 is filled in as well as the toggle is set to "Capital gains".
If it was a net capital loss, it would not be on line 127. You can see any losses carrying forward by clicking on "review" and then select "Transfer for Next Year Summary".
For additional guidance, please see our TurboTax FAQ: Where do I report capital gains or losses in TurboTax Online?
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