SmartCheck Error: Form 8615

I am trying to file my children's taxes and smart check gives me the following error for both:

 

"Form 8615: ParentsNetLTGain shouldn't be less than or equal to zero." 

 

Our (parent's) net capital gain in 2022 was a significant loss.  I filled it out as directed by the program and now it is saying that cannot be.  What am I supposed to do here?  There was no "gain" for us last year.