Change the renderscriptTargetApi down to 20

transformations/build.gradle

@@ -9,6 +9,8 @@ android {
         targetSdkVersion TARGET_SDK_VERSION as int
         versionCode VERSION_CODE as int
         versionName VERSION_NAME
+
+        // Warning:Renderscript support mode is not currently supported with renderscript target 21+
         renderscriptTargetApi RENDERSCRIPT_TARGET_API as int
         renderscriptSupportModeEnabled true
     }