Build failed...

Tried to re-build a project I built and released a week ago, and now build is failing. Tried several times then updated to the latest release on github. still failing. here is the log;

15:00:16.177 Creating AndroidManifest.xml
15:00:16.177 permissionName: com.android.vending.BILLING
15:00:16.177 permissionName: android.permission.INTERNET
15:00:16.177 permissionName: com.android.vending.CHECK_LICENSE
15:00:16.177 permissionName: android.permission.INTERNET
15:00:16.177 permissionName: android.permission.INTERNET
15:00:16.177 permissionName: android.permission.ACCESS_NETWORK_STATE
15:00:16.177 permissionName: android.permission.WAKE_LOCK
15:00:16.177 permissionName: com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
15:00:16.177 Opening: C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build/intermediates/corona_manifest_gen/strings.xml
15:00:16.177 Opening: C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build/intermediates/corona_manifest_gen/CopyToApk.txt
15:00:16.177 Collecting native libraries
15:00:16.177 Collecting legacy jar libraries
15:00:16.177 WARNING:: Using flatDirs should be avoided because it doesn’t support any meta-data formats.
15:00:16.177 Currently detected usages:
15:00:16.177 - repository flatDir used in: root project ‘Corona Android’, project ‘:App’
15:00:16.177 WARNING:: Please remove usages of jcenter() Maven repository from your build scripts and migrate your build to other Maven repositories.
15:00:16.177 This repository is deprecated and it will be shut down in the future.
15:00:16.177 See http://developer.android.com/r/tools/jcenter-end-of-service for more information.
15:00:16.177 Currently detected usages in: root project ‘Corona Android’, project ‘:App’
15:00:16.177
15:00:16.177 > Task :App:coronaCopyApkFiles NO-SOURCE
15:00:16.177 > Task :App:cleanupIconsDirectory UP-TO-DATE
15:00:16.177 > Task :App:copyDefaultNotificationIcons NO-SOURCE
15:00:16.177 > Task :App:copyMainApplicationBanner NO-SOURCE
15:00:16.177 > Task :App:copyMainApplicationIcon
15:00:16.177 > Task :App:copyOuyaApplicationIcon NO-SOURCE
15:00:16.177 > Task :App:copySplashScreen NO-SOURCE
15:00:16.177 > Task :App:copyXiaomiApplicationIcon NO-SOURCE
15:00:16.177 > Task :App:copyCoronaIconFiles
15:00:16.177 > Task :App:copyAdaptiveIconResources
15:00:16.177 > Task :App:copyCoronaIcons
15:00:16.177 > Task :App:preBuild
15:00:16.177 > Task :App:preReleaseBuild
15:00:16.177 > Task :App:compileReleaseAidl NO-SOURCE
15:00:16.177 > Task :App:compileReleaseRenderscript NO-SOURCE
15:00:16.177 > Task :App:generateReleaseBuildConfig SKIPPED
15:00:16.177 > Task :App:javaPreCompileRelease
15:00:16.177 > Task :App:writeReleaseApplicationId
15:00:16.177 > Task :App:analyticsRecordingRelease
15:00:16.177 > Task :App:checkReleaseAarMetadata
15:00:16.177 > Task :App:generateReleaseResValues
15:00:16.177 > Task :App:generateReleaseResources
15:00:16.177 > Task :App:createReleaseCompatibleScreenManifests
15:00:16.177 > Task :App:extractDeepLinksRelease
15:00:16.177 > Task :App:processReleaseMainManifest
15:00:16.177 > Task :App:processReleaseManifest
15:00:16.177 > Task :App:mergeReleaseJniLibFolders
15:00:16.177 > Task :App:mergeReleaseShaders
15:00:16.177 > Task :App:compileReleaseShaders NO-SOURCE
15:00:16.177 > Task :App:generateReleaseAssets UP-TO-DATE
15:00:16.177 > Task :App:compileLuaRelease
15:00:16.177 > Task :App:mergeReleaseResources
15:00:16.177 > Task :App:packageCoronaAppRelease
15:00:16.177 > Task :App:mergeReleaseNativeLibs
15:00:16.177 > Task :App:mergeReleaseAssets
15:00:16.177
15:00:16.177 > Task :App:stripReleaseDebugSymbols
15:00:16.177 Unable to strip the following libraries, packaging them as they are: libads.so, libalmixer.so, libanalytics.so, libcorona.so, libgameNetwork.so, libjnlua5.1.so, liblicensing.so, liblua.so, libmpg123.so, libopenal.so, libplugin.utf8.so.
15:00:16.177
15:00:16.177 > Task :App:extractReleaseNativeSymbolTables
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libads.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libalmixer.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libanalytics.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libcorona.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libgameNetwork.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libjnlua5.1.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\liblicensing.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\liblua.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libmpg123.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libopenal.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\arm64-v8a\libplugin.utf8.so because unable to locate the objcopy executable for the arm64-v8a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libads.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libalmixer.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libanalytics.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libcorona.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libgameNetwork.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libjnlua5.1.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\liblicensing.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\liblua.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libmpg123.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libopenal.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\armeabi-v7a\libplugin.utf8.so because unable to locate the objcopy executable for the armeabi-v7a ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libads.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libalmixer.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libanalytics.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libcorona.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libgameNetwork.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libjnlua5.1.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\liblicensing.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\liblua.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libmpg123.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libopenal.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86\libplugin.utf8.so because unable to locate the objcopy executable for the x86 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libads.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libalmixer.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libanalytics.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libcorona.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libgameNetwork.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libjnlua5.1.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\liblicensing.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\liblua.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libmpg123.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libopenal.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177 Unable to extract native debug metadata from C:\Users\User\AppData\Local\Temp\Corona Labs\CLtmpa09284\template\app\build\intermediates\merged_native_libs\release\out\lib\x86_64\libplugin.utf8.so because unable to locate the objcopy executable for the x86_64 ABI.
15:00:16.177
15:00:16.177 > Task :App:mergeReleaseNativeDebugMetadata NO-SOURCE
15:00:16.177 > Task :App:checkReleaseDuplicateClasses FAILED
15:00:16.177 > Task :App:processReleaseManifestForPackage
15:00:16.177 > Task :App:compressReleaseAssets
15:00:16.177 > Task :App:desugarReleaseFileDependencies
15:00:16.177
15:00:16.177 FAILURE: Build failed with an exception.
15:00:16.177
15:00:16.177 * What went wrong:
15:00:16.177 Execution failed for task ‘:App:checkReleaseDuplicateClasses’.
15:00:16.177 > A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
15:00:16.177 > Duplicate class com.google.android.gms.internal.measurement.zzbt found in modules jetified-play-services-measurement-17.4.4-runtime (com.google.android.gms:play-services-measurement:17.4.4) and jetified-play-services-measurement-sdk-api-18.0.0-runtime (com.google.android.gms:play-services-measurement-sdk-api:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzbu found in modules jetified-play-services-measurement-17.4.4-runtime (com.google.android.gms:play-services-measurement:17.4.4) and jetified-play-services-measurement-sdk-api-18.0.0-runtime (com.google.android.gms:play-services-measurement-sdk-api:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzga found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzgb found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzlp found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzm found in modules jetified-play-services-measurement-api-17.4.4-runtime (com.google.android.gms:play-services-measurement-api:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzn found in modules jetified-play-services-measurement-api-17.4.4-runtime (com.google.android.gms:play-services-measurement-api:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzo found in modules jetified-play-services-measurement-api-17.4.4-runtime (com.google.android.gms:play-services-measurement-api:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.internal.measurement.zzp found in modules jetified-play-services-measurement-api-17.4.4-runtime (com.google.android.gms:play-services-measurement-api:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzgs found in modules jetified-play-services-measurement-17.4.4-runtime (com.google.android.gms:play-services-measurement:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzgu found in modules jetified-play-services-measurement-17.4.4-runtime (com.google.android.gms:play-services-measurement:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzgv found in modules jetified-play-services-measurement-17.4.4-runtime (com.google.android.gms:play-services-measurement:17.4.4) and jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzgw found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzgx found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzgz found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzia found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177 Duplicate class com.google.android.gms.measurement.internal.zzig found in modules jetified-play-services-measurement-base-18.0.0-runtime (com.google.android.gms:play-services-measurement-base:18.0.0) and jetified-play-services-measurement-impl-17.4.4-runtime (com.google.android.gms:play-services-measurement-impl:17.4.4)
15:00:16.177
15:00:16.177 Go to the documentation to learn how to Fix dependency resolution errors.
15:00:16.177
15:00:16.177 * Try:
15:00:16.177 Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
15:00:16.177
15:00:16.177 * Get more help at https://help.gradle.org
15:00:16.177
15:00:16.177 BUILD FAILED in 1m 35s
15:00:16.177 25 actionable tasks: 24 executed, 1 up-to-date
15:00:16.177 Picked up JAVA_TOOL_OPTIONS: -Duser.language=en
15:00:16.177 Picked up _JAVA_OPTIONS: -Xmx512M
15:00:18.112 Android build failed (1) after 101 seconds