wont let me download 1.12.1

This is the crash error.
Name: ar_sa.lang
URL: http://resources.download.minecraft.net/d7/d7b378fea63e3b5b7978c9587ccf1d4d051c24a1
Error details: Attempting to move successful download to C:/Users\Jana\AppData\Roaming\.minecraft\assets\objects\d7/d7b378fea63e3b5b7978c9587ccf1d4d051c24a1 The process cannot access the file because it is being used by another process
Filename on disk: 69a0-7be5-be17-7d0e
Path: C:\Users\Jana\AppData\Local\Temp\69a0-7be5-be17-7d0e
Exists: file