Received 1099B for unvested RSU after leaving company

I left a job in 2019 where I was granted some RSUs that were to be vested first time in 2020. But I never received the RSUs since I left the company before the first vesting.

Today I received a 1099-B for those unvested shares as if they were acquired and sold on the same/next day and I have a capital gain acquired. Is this some error since I never received any stocks? Do I have to report the capital gain in my fed return and pay tax for it?