The code 2 on this 2019 Form 1099-R (which means that the distribution is not subject to an early-distribution penalty) suggests that you performed a Roth conversion in 2019. Roth conversions are taxable unless you have basis in nondeductible traditional IRA contributions that equal or exceed the amount in your traditional IRAs.
Perhaps you made a nondeductible contribution for 2018, converted it to Roth in 2019 and mistakenly reported the Roth conversion on your 2018 tax return. If so, you'll need to amend and correct your 2018 tax return.