Name: cs_CZ.lang
URL: http://resources.download.minecraft.net/d8/d8dd3873fac34c74f038df02d76d745febafe8da
Error details: Request error -101: ERR_CONNECTION_RESET
Filename on disk: 3252-5103-20df-f116
Path: C:\Users\Gamer\AppData\Local\Temp\3252-5103-20df-f116
Exists: file

Trying to run Alpha version a1.1.0. This issue also occurs when I try to load the latest version, except it says 

ERROR

 
Failed to download file. cs_cz.json