Check this post. Seems like this error is due to TurboTax not being able to convert items with "various" acquiring date from Webull. For now, only fix is to edit them manually which is lame. TurboTax should fix this which seems not very hard as they've fixed this for Robinhood already.
https://ttlc.intuit.com/community/taxes/discussion/re-check-this-entry-form-1099-b-date-acquired-err...
