Same error, and found that they are aware of it as of 2/26. I hope they extend the pricing that is supposed to end tonight. Not right that we can't file and therefore will pay a higher fee once it is resolved.
Here is the post: https://ttlc.intuit.com/community/tax-credits-and-deductions/help/deductible-home-mortgage-interest-worksheet-9-945-263-error/00/1995112