21.0 build error

[100% 1164/1164] analyzing Android.bp files and generating ninja file at out/soong/build.lineage_a52q.ninja
FAILED: out/soong/build.lineage_a52q.ninja
cd "$(dirname "out/host/linux-x86/bin/soong_build")" && BUILDER="$PWD/$(basename "out/host/linux-x86/bin/soong_build")" && cd / && env -i  "$BUILDER"     --top "$TOP"     --soong_out "out/soong"     --out "out"     --soong_variables out/soong/soong.lineage_a52q.variables -o out/soong/build.lineage_a52q.ninja --globListDir lineage_a52q --globFile out/soong/globs-lineage_a52q.ninja -l out/.module_paths/Android.bp.list --available_env out/soong/soong.environment.available --used_env out/soong/soong.environment.used.lineage_a52q.build Android.bp
error: vendor/fairphone/FP5/Android.bp:5:1: module "soong_namespace": namespace device/fairphone/FP5 does not exist; Some necessary modules may have been skipped by Soong. Check if PRODUCT_SOURCE_ROOT_DIRS is pruning necessary Android.bp files.
fatal errors encountered
ninja: build stopped: subcommand failed.
01:20:52 soong bootstrap failed with: exit status 1