Как я могу получить Pst Attchment из файла pst

Я использую java libpst и tika для извлечения метаданных из файла pst, я использовал этот код:

    int numberOfAttachments = email.getNumberOfAttachments();
    for (int x = 0; x < numberOfAttachments; x++) {
    PSTAttachment attach = email.getAttachment(x);
   InputStream attachmentStream = attach.getFileInputStream();
   // both long and short filenames can be used for attachments
   String filename = attach.getLongFilename();
   if (filename.isEmpty()) {
        filename = attach.getFilename();
   }
   FileOutputStream out = new FileOutputStream(filename);
   // 8176 is the block size used internally and should give the best performance
   int bufferSize = 8176;
   byte[] buffer = new byte[bufferSize];
   int count = attachmentStream.read(buffer);
   while (count == bufferSize) {
        out.write(buffer);
        count = attachmentStream.read(buffer);
   }
   byte[] endBuffer = new byte[count];
   System.arraycopy(buffer, 0, endBuffer, 0, count);
   out.write(endBuffer);
   out.close();
   attachmentStream.close();
   }

и у меня есть эта ошибка:

  Caused by: java.io.FileNotFoundException: Invalid file path
  at java.io.FileOutputStream.<init>(Unknown Source)
  at java.io.FileOutputStream.<init>(Unknown Source)