Retirement tax questions

The right side picture is the IRS notification letter indicating I reported the number from the column [1e - Cost of the order basis($)] instead of the number from the column [1d - Proceeds($)] for 1099-B from Computershare Inc. I recall it was filled by the system automatically when we do data importing from a stock account. There seems to be something wrong with the system, I cannot find the 8949 form from Computershare Inc attached to my tax application final report either. but it did report along with my 2023 tax refund application otherwise it wouldn't show on the IRS letter that the number reported is not matched to the one from a third party. Most of the stock I sold has a cost, except one entry that came from the company LTI (long term incentive) bonus. It looks like everything is messed up due to the Computershare Inc 8949 form missing from my application form. Therefore it led to a big amount of penalty and I need to pay extra tax back to the IRS. Please help investigate where the root case is