Download This default.xml with repo
repo init -u https://github.com/airjason13/repo_rpi4_kirkstone
repo sync
source poky/oe-init-build-env $BUILD_FOLDER_NAME
copy local.conf
cp local.conf to your $BUILD_FOLDER_NAME/conf/
under your $BUILD_FOLDER_NAME,
bitbake core-image-minimal-xfce