Unexpected fail for task "javac"

I have this message and the message say that i can have folder or file name long too big, but i have no folder or file name. See below the complete message:

Falha inesperada da tarefa "Javac". System.IO.PathTooLongException: O
caminho especificado, o nome do arquivo ou ambos são muito longos. O
nome de arquivo totalmente qualificado deve ter menos de 260
caracteres e o nome do diretório menos de 248 caracteres. em
System.IO.LongPathHelper.Normalize(String path, UInt32 maxPathLength,
Boolean checkInvalidCharacters, Boolean expandShortPaths) em
System.IO.Path.NewNormalizePath(String path, Int32 maxPathLength,
Boolean expandShortPaths) em System.IO.Path.NormalizePath(String
path, Boolean fullCheck, Int32 maxPathLength, Boolean
expandShortPaths) em System.IO.Path.GetFullPathInternal(String
path) em System.IO.FileInfo.Init(String fileName, Boolean
checkHost) em System.IO.FileInfo..ctor(String fileName) em
Xamarin.Android.Tasks.ZipArchiveEx.AddFiles(String folder, String
folderInArchive) em
Xamarin.Android.Tasks.ZipArchiveEx.AddDirectory(String folder, String
folderInArchive) em Xamarin.Android.Tasks.Javac.Execute() em
Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
em
Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext()

It was workin. I made an update on my Visual Studio and now i cannot work fine my app.

What am i doing wrong and how can i solve this?