Did you install the patch for version 2004 and it still didn't resolve the problem.
Version 2004 known issues. KB4567523
https://docs.microsoft.com/en-us/windows/release-information/status-windows-10-2004
Having finally got my Brother DCP-197C printing again after hours (days) of frustration, de-installing and re-installing printer drivers and software; only to find out that the problem was due to Microsoft Windows 10 Updates; I decided not to risk going backwards by installing a patch from (who?) "Microsoft" to solve a "Microsoft" caused problem.
My printer is working again now and I would rather have a reliable printer until the end of my Windows Update delay period (end of July); then I will allow Windows 10 Update to install all past updates; and if the printer fix patch is not included in that I will install it manually.
Basically, what I have got now works, thanks to the advice in these posts (why go backwards?).