UnauthorizedAccessException: unity-ads.aar on Gradle Export

Hi, has anyone come across this problem when building a Gradle Export?

Error details below:

UnauthorizedAccessException: Access to the path "[PROJECT PATH]Temp\StagingArea\aar\unity-ads.aar" or "[EXPORT PATH]\libs\unity-ads.aar" is denied.
System.IO.File.Copy (System.String sourceFileName, System.String destFileName, Boolean overwrite) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.IO/File.cs:124)
UnityEditor.FileUtil.UnityFileCopy (System.String from, System.String to, Boolean overwrite) (at C:/buildslave/unity/build/Editor/Mono/FileUtil.cs:207)
UnityEditor.Android.AndroidProjectExport.CopyFile (System.String source, System.String target)
UnityEditor.Android.AndroidProjectExportGradle.AddAARDependencies (System.String libsProjectPath)
UnityEditor.Android.AndroidProjectExportGradle.ExportWithCurrentSettings ()
UnityEditor.Android.AndroidProjectExport.Export (UnityEditor.Android.PostProcessor.PostProcessorContext context, System.String targetPath)
UnityEditor.Android.PostProcessor.Tasks.ExportProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.BuildReporting.BuildReport report)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (BuildPostProcessArgs args)
UnityEditor.PostprocessBuildPlayer.Postprocess (BuildTargetGroup targetGroup, BuildTarget target, System.String installPath, System.String companyName, System.String productName, Int32 width, Int32 height, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.BuildReporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:272)
UnityEngine.GUIUtility: ProcessEvent(Int32, IntPtr)

Unity version 2017.3.1f1
Unity IAP is up to date.
Have clicked User Proguard File under Publishing Settings but doesn't clear errors.

Any ideas as to whats causing the error would be appreciated.

 

• I remember having the same problem. After I delete the export folder and reexport, the problem is disappear.

 

I'm having the same problem and the above solution isn't working. Anyone found a different solution?

 

I still have the same problem...