AOSP_8.1 Error xxhdpi

Android_ROM_1.0$ make -j4
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=8.1.0
TARGET_PRODUCT=aosp_albus
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm64
TARGET_ARCH_VARIANT=armv8-a
TARGET_CPU_VARIANT=cortex-a53
TARGET_2ND_ARCH=arm
TARGET_2ND_ARCH_VARIANT=armv7-a-neon
TARGET_2ND_CPU_VARIANT=cortex-a53
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-5.0.0-16-generic-x86_64-with-LinuxMint-19.1-tessa
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=OPM5.171019.014
OUT_DIR=out
============================================
ninja: no work to do.
ninja: no work to do.
out/build-aosp_albus.ninja is missing, regenerating...
[998/998] including ./vendor/motorola/albus/Android.mk ...
build/core/Makefile:1110: error: FindEmulator: find: `xxhdpi': No such file or directory
14:33:17 ckati failed with: exit status 1

#### failed to build some targets (46 seconds) ####



Found while trying to build AOSP_8.1-r9 for motorola_albus under linuxmint