unable to build.

I am getting this error when I try to build. I am building for Android platform. tried both internal and Gradle. In gradle i get this error.
UnityEditor.BuildPlayerWindow+BuildMethodException: 2 errors
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (BuildPlayerOptions options) [0x0021f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:187
at UnityEditor.BuildPlayerWindow.CallBuildMethods (Boolean askForBuildLocation, BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:94
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

i have only one scene as of now. Game works fine in editor.

i had created a copy of another project which was working fine, just deleted the scenes and created a new scene in this Copy of the project and im tryin to build it with all the same settings of the original project.

please help

Hi. thanks for your comment,
these are the errors in the console:

I am unable to post them all in one comment as it exeeds the limit so posting as two comments.
Virtual Reality SDK Daydream is not supported in Editor Play Mode. Please Build and run on a supported target device.
Will attempt to enable Oculus instead.

Instant Preview Version: 1.1.1
UnityEngine.Debug:Log(Object)
Gvr.Internal.InstantPreview:Start() (at Assets/GoogleVR/Scripts/InstantPreview/InstantPreview.cs:162)

![alt text][1]
adb.exe: no devices/emulators found
UnityEngine.Debug:LogError(Object)
Gvr.Internal.c__AnonStorey2:<>m__0() (at Assets/GoogleVR/Scripts/InstantPreview/InstantPreview.cs:195)

CommandInvokationFailure: Gradle build failed.
C:/Program Files (x86)/Java/jdk1.8.0_171\bin\java.exe -classpath “C:\Program Files\Unity\Hub\Editor\2017.3.1f1\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-4.2.1.jar” org.gradle.launcher.GradleMain “-Dorg.gradle.jvmargs=-Xmx1024m” “assembleDebug”

stderr[

FAILURE: Build failed with an exception.

  • What went wrong:
    A problem occurred configuring root project ‘gradleOut’.

No toolchains found in the NDK toolchains folder for ABI with prefix: mips64el-linux-android

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

  • Get more help at https://help.gradle.org

BUILD FAILED in 24s
]
stdout[
Starting a Gradle Daemon (subsequent builds will be faster)
Observed package id ‘tools’ in inconsistent location ‘C:\Users\juhus_000\AppData\Local\Android\Sdk empToolsDir’ (Expected ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools’)
Observed package id ‘tools’ in inconsistent location ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools22’ (Expected ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools’)
Already observed package id ‘tools’ in ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools’. Skipping duplicate at ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools22’
Observed package id ‘tools’ in inconsistent location ‘C:\Users\juhus_000\AppData\Local\Android\Sdk empToolsDir’ (Expected ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools’)
Observed package id ‘tools’ in inconsistent location ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools22’ (Expected ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools’)
Already observed package id ‘tools’ in ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools’. Skipping duplicate at ‘C:\Users\juhus_000\AppData\Local\Android\Sdk ools22’
]
exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action1 progress, System.String error) UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action1 progress)
Rethrow as GradleInvokationException: Gradle build failed
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1 progress)
UnityEditor.Android.PostProcessor.Tasks.BuildGradleProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)