I have a pr yr MA Research Credit that Im using on 2020 MA 355S. Sch CMS says I must include Schedule RC. I opened Sch RC and entered all 0, but there is still an error.

I have a MA Research Credit for the prior year that I am using on 2020 MA Form 355S. When I enter the prior year Research Credit on Schedule CMS, it tells me I must include Schedule RC, but I don't have a current year Research Credit so the amounts on Schedule RC will be 0. Nevertheless, I opened Schedule RC and entered all zeros, but there is still an error on Schedule CMS.  Does anyone have any suggestions to remove the error?  I'm afraid I will not be able to e-file unless I fix the error somehow.  Thanks!