If you opened it with Excel and then save it, the file may have been modified and is not a proper csv anymore. Excel often add double quotes or comma while dealing with csv not properly loaded. Could you try download the file again and upload it without opening it with Excel in meantime?
Anil_G
ashokkarale
jinal.shah
Gautham_Pattabiraman
postwick
chandreshsinh.jadeja
vrdabberu
Ajay_Mishra
sven.wullum1
Vyshnavi_Nalumachu