The issues with the HBP repayment were resolved in recent updates so you should not be encountering this still. You could try deleting your RRSP information and re-enter it, however, that still may not remove the error message you are seeing.
For this reason, I'm going to direct you towards our Support team so you can proceed with successfully NetFiling your return.
https://turbotax.community.intuit.ca/replies/3152013
