Error:The "ConvertResourcesCases" task failed unexpectedly.

Hi,

Severity Code Description Project File Line Suppression State
Error The "ConvertResourcesCases" task failed unexpectedly.
System.IO.PathTooLongException: The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
at System.IO.Path.LegacyNormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
at System.IO.Path.InternalGetDirectoryName(String path)
at Xamarin.Android.Tools.Files.CopyIfChanged(String source, String destination)
at Xamarin.Android.Tasks.ConvertResourcesCases.FixupResources(ITaskItem item, Dictionary2 acwMap) at Xamarin.Android.Tasks.ConvertResourcesCases.FixupResources(Dictionary2 acwMap)
at Xamarin.Android.Tasks.ConvertResourcesCases.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() ResourceManagement.Droid

can anyone help me to fix this error.
thanks