used to override an existing property.\n[available] Build file should not reuse the same property name for different values?

• FirstMVCApp Codegeneration is Successful
• konyplugins.xml is copied to E:\\chandru\\WorkspaceLearnKony\\FirstMVCApp successfully.
• In kvbuildMessageHandler...
• Platform wise codegen status: "FirstMVCApp Codegeneration is Successful"
• Executing build file: /E:/KonyVisualizerEnterprise8.3.0.0/Kony_Visualizer_Enterprise/configuration/org.eclipse.osgi/bundles/479/1/.cp//masterbuild.xml
• commoninit:
• killadb:
• [exec] Microsoft Windows [Version 10.0.17763.557]
• [exec] (c) 2018 Microsoft Corporation. All rights reserved.
• [exec]
• [exec] E:\\KonyVisualizerEnterprise8.3.0.0\\Kony_Visualizer_Enterprise\\configuration\\org.eclipse.osgi\\bundles\\479\\1\\.cp>
• Executing build file: /E:/KonyVisualizerEnterprise8.3.0.0/Kony_Visualizer_Enterprise/configuration/org.eclipse.osgi/bundles/479/1/.cp/masterbuild.xml
• createdir:
• Unable to delete directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid\\dist\\FirstMVCApp
• Ant build error=Unable to delete directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid\\dist\\FirstMVCApp
• Unable to delete directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid\\dist\\FirstMVCApp
• Console: Switched to tab "Console"
• Time for loading build manifest:9
• Time for loading i18n locales:0
• Time for getting modified form names:10
• Found installation dir: E:\\KonyVisualizerEnterprise8.3.0.0\\Kony_Visualizer_Enterprise
• Starting Build Generation Process
• Copying the build files
• Executing build file: E:\\chandru\\WorkspaceLearnKony/temp/FirstMVCApp/masterbuild.xml
• commoninit:
• init:
• checkversion:
• createversionfile:
• [touch] Creating E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\201809141609.txt
• unzip:
• [touch] Creating E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build.lock
• [echo] Refreshing build directory
• [unzip] Expanding: E:\\KonyVisualizerEnterprise8.3.0.0\\Kony_Visualizer_Enterprise\\configuration\\org.eclipse.osgi\\bundles\\479\\1\\.cp\\lib\\build.zip intoE:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp
• [delete] Deleting: E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build.lock
• windowsdesktopbuild:
• bbbuild:
• bb10build:
• androidbuild:
• [available] DEPRECATED - used to override an existing property.\n[available] Build file should not reuse the same property name for different values.
• [echo] android.version : 8.3.0.v201809071938
• [echo] android.version.file : false
• [echo] android.build.file : /E:/KonyVisualizerEnterprise8.3.0.0/Kony_Visualizer_Enterprise/configuration/org.eclipse.osgi/bundles/475/1/.cp//luaandroid
• [echo] android.available : true
• [echo] version.txt.file : true
• [echo] build.lock : false
• [delete] Deleting directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid
• Unable to delete directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid\\dist\\FirstMVCApp
• Ant build error=Unable to delete directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid\\dist\\FirstMVCApp
• Unable to delete directory E:\\chandru\\WorkspaceLearnKony\\temp\\FirstMVCApp\\build\\luaandroid\\dist\\FirstMVCApp
• Copying of build files has failed
• Build Generation failed
• Build Generation Status
• Android: Failed
• Application [FirstMVCApp] is pointing to [chandkony - chandirasekar.k-M100025968001] environment but does not involve Service integration.
• Total time taken: 15471 ms
• 
  
• Solution :-
• 
  
• Delete temp or temp/currentPorject then clean and build the application It will work.
• 
  
• 
  
• 
  
• 
  
• <----------- build="" completed---------------="" generation="" is="" job="">

How to Build our app from the Command Line in Kony Visualizer Projects?

Build your app from the command line

About build types :-

   By default, there are two build types available for every Android app: one for debugging your app—the debugbuild—and one for releasing your app to users—the release build. The resulting output from each build must be signed with a certificate before you can deploy your app to a device. The debug build is automatically signed with a debug key provided by the SDK tools (it's insecure and you cannot publish with it to the Google Play Store), and the release build must be signed with your own private key.

 Build a debug APK

      For immediate app testing and debugging, you can build a debug APK. The debug APK is signed with a debug key provided by the SDK tools and allows debugging through adb.

To build a debug APK, open a command line and navigate to the root of your project directory. To initiate a debug build, invoke the assembleDebug task:

gradlew assembleDebug

This creates an APK named Project Name-debug.apk in
project_name/module_name/build/outputs/apk/. The file is already signed with the debug key and aligned with zipalign, so you can immediately install it on a device.

Steps :

 1) Project Location ===> cmd

 2) gradlew assembleDebug

Videos :-