error message

I get this message when I click on Investment Income; Stock ,Crypto, Bonds, Other." to enter 1099-S sale of land.  I've tried numerous times and can't get past this error message to enter data.

 

"Hmmm Looks like we hit a snag.  Revisit last topic you were working on to make sure all info is correct"

 

Why am I getting this and what am I supposed to do?  Last topic was entering 1099-Int forms.  Went back and everything OK.