Revert "Issue #2965929 by jhedstrom, dimitriskr, kkalashnikov, sun, Lendude,...
Revert "Issue #2965929 by jhedstrom, dimitriskr, kkalashnikov, sun, Lendude, DanielVeza: DX: Insufficient error message "The form argument is not a valid form.""
This reverts commit a12680a1.