Build and Run fail. Unity Ver. 2018.3.0f2. Hardware Oculus Go. SDK Ver. level 25 Android 7.1

Today I was trying to build a VR sample scene for Oculus Go. But when I tried the build or build and run are all failed.

Error Message on build and run:

Build completed with a result of ‘Failed’
UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00234] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:190
at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:96

Error message on Build only:

UnauthorizedAccessException: Access to the path “Assets\Oculus\VR\Plugins\1.32.0\Android\OVRPlugin.aar” or “Temp\StagingArea\aar\OVRPlugin.aar” is denied.
System.IO.File.Copy (System.String sourceFileName, System.String destFileName, System.Boolean overwrite) (at :0)
UnityEditor.FileUtil.UnityFileCopy (System.String from, System.String to, System.Boolean overwrite) (at C:/buildslave/unity/build/Editor/Mono/FileUtil.cs:210)
UnityEditor.Android.PostProcessor.Tasks.NativePlugins.ProcessPlugin (UnityEditor.Android.PostProcessor.PostProcessorContext context, System.String pluginPath, System.String pluginTargetCPU) (at :0)

Build completed with a result of ‘Succeeded’
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

But I cannot find the built apk or anything in the destination folder.

That exactly is this problem and what I can do to fix it.

I was getting the same thing.

from the oculus integration in the asset store:

Due to an incompatibility with the
Oculus Integration and all Unity
2018.3.x versions, we do not recommend upgrading to any 2018.3.x Unity Editor

downgrading to 2018.2 allows a build with no errors.