Lump-Sum Social Security Summary Question

Received a lump sum in 2017 from SS for a one time payment. Amount was already included and taxed in 2017, Why am I being taxed again??

 

Inputted the info into Turbotax  for the year 2017.

 

But under the Lump-Sum Social Security Summary for 2017, it show the following.

Amount Received in 2017 - My total SS Benefit for the year

Amount Received in 2019 - My Lump Sum Payment in 2017

 

Is this an error???