How to use the module

Failed to save downloads. Launchwrapper-1.12.jar
Name: launchwrapper-1.12.jar
URL: https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar
Error details: Attempt to successfully download to C:/Users\User\AppData\Roaming\.minecraft\libraries\net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar
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Filename on the disk: d295-5918-2b47-e9bd
Path: C:\ Users \ User \ AppData \ Local \ Temp \ d295-5918-2b47-e9bd
Existence: file