TTFILE008498 exist, So no need to download 
Getting TTFILE008499;1
TTFILE008499 exist, So no need to download 
Getting TTFILE008500;1
TTFILE008500;1 can not be downloaded error Bad file descriptor
Getting TTFILE008501;1
TTFILE008501;1 can not be downloaded error No such file or directory
Getting TTFILE008502;1
TTFILE008502;1 can not be downloaded error No such file or directory