An error occurred when executing task 'Build-Android'. Error: XBuild: Process returned an error (exit code 1).

I have tried to build this sample project with cake build while building this I am getting below error error occurred when executing task 'Build-Android' Error: XBuild: Process returned an error (exit code 1)

Clean, Restore-Packages and Prepare-Build tasks executed successfully. It is failing on while executing Build-Android task.

Feeds used:
  /Users/jamibr/.nuget/packages/
  https://api.nuget.org/v3/index.json
  /Users/jamibr/Documents/XamarinFormsSampleProjects/mixpanel-xamarin-master/nuget

All packages listed in /Users/jamibr/Documents/XamarinFormsSampleProjects/cake-xamarin-sample-master/tools/packages.config are already installed.
Analyzing build script...
Processing build script...
Installing tools...
Installing addins...
Compiling build script...

========================================
Clean
========================================
Executing task: Clean
Cleaning directory /Users/jamibr/Documents/XamarinFormsSampleProjects/cake-xamarin-sample-master/artifacts
Cleaning directory /Users/jamibr/Documents/XamarinFormsSampleProjects/cake-xamarin-sample-master/src/ios/Cake.Xamarin.Sample.iOS/bin/iPhoneSimulator

>>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<

XBuild Engine Version 14.0
Mono, Version 6.0.0.0
Copyright (C) 2005-2013 Various Mono authors
/Users/jamibr/Documents/XamarinFormsSampleProjects/cake-xamarin-sample-master/src/android/Cake.Xamarin.Sample.Android/Cake.Xamarin.Sample.Android.csproj:  warning : Target '_GetRestoreTargetFrameworksOutput', not found in the project
Finished executing task: Clean

========================================
Restore-Packages
========================================
Executing task: Restore-Packages
MSBuild auto-detection: using msbuild version '15.0' from '/Library/Frameworks/Mono.framework/Versions/6.0.0/lib/mono/msbuild/15.0/bin'.
All packages listed in packages.config are already installed.
Finished executing task: Restore-Packages

========================================
Prepare-Build
========================================
Executing task: Prepare-Build
Finished executing task: Prepare-Build

========================================
Build-Android
========================================
Executing task: Build-Android

>>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<

XBuild Engine Version 14.0
Mono, Version 6.0.0.0
Copyright (C) 2005-2013 Various Mono authors
/Users/jamibr/Documents/XamarinFormsSampleProjects/cake-xamarin-sample-master/src/android/Cake.Xamarin.Sample.Android/Cake.Xamarin.Sample.Android.csproj:  warning : Target '_GetRestoreTargetFrameworksOutput', not found in the project
:  warning : Method not found: Microsoft.Build.Framework.IBuildEngine4 Microsoft.Build.Utilities.Task.get_BuildEngine4()
:  warning XA0034: Failed to get the Java SDK version. Please ensure you have Java 1.8 or above installed.
An error occurred when executing task 'Build-Android'.
Error: XBuild: Process returned an error (exit code 1).

jzeferino / cake-xamarin-sample

An error occurred when executing task 'Build-Android'. Error: XBuild: Process returned an error (exit code 1). #4