1.12 won't open for me

When I try to open Minecraft version 1.12 it says:

Failed to download file. cs_cz.lang
Name: cs_cz.lang
URL: http://resources.download.minecraft.net/ac/ac52bce00c6aa4848735f19fe8fed70d5aa71a90
Error details: Request error -101: ERR_CONNECTION_RESET
Filename on disk: ac52bce00c6aa4848735f19fe8fed70d5aa71a90
Path: C:/Users\SqaisheyDuck\AppData\Roaming\.minecraft\assets\objects\ac/ac52bce00c6aa4848735f19fe8fed70d5aa71a90
Exists: false