if there is something missing / not up to date in the documentation then i think you could also open an issue with recommendations / updates for the documentation at:
I fixed the problem following the instructions of “TheOneRing” from github.
KDE Has changed a lot, not using MSVC2019 instead of 2017 and KDE Repos has changed, so you have to delete Craft compeletly and install it from scratch, it will solve it. By the way install Python2.7 before starting the installation because otherwise it will give error.