Before reporting a bug, I advise you to try the same action that led to the error with the latest nightly build (https://kicad-downloads.s3.cern.ch/index.html?prefix=windows/nightly/).
It may have been fixed in the meantime. In this case, no need to waste your time by reporting it. And if it still displays the error, follow this FAQ How can I help improve KiCad? - Section Bug Reports