I'm getting an Error based on T776 from my Rental Property

You have selected one or more CCA classes for the non-compliant short-term expenses that were not reported in capital cost allowance assets for rental. Please review your...

But I have not entered and Assets for CCA.

This is preventing Online Filing.

How can I fix this issue?
Is there a way to speak with a support agent to resolve what seems to be a software issue?