If there is nothing on line 8 of form 8863, then it is more likely that the amount on line 19 is the Lifetime Learning Credit (LLC) rather than the American Opportunity Credit (AOC). Check lines 30 and 31 of form 8863. That should tell you whether you claimed the LLC or AOC in 2019.
The Hope Credit did not exist in 2019. Starting with tax year 2009, the Hope credit had been supplanted by the more generous AOC.
