Missing English translation

Hello,
I am using spongeforge-1.12.1-2444-7.0.0-BETA-2500 & forge-1.12.1-14.22.0.2444-universal on Windows 10, clean files.

I got this error when I added spongeforge-1.12.1-2444-7.0.0-BETA-2500.jar to the mods

[01:22:05] [Server thread/WARN] [FML]: Missing English translation for FML: assets/fml/lang/en_us.lang
[01:22:05] [Server thread/WARN] [FML]: Missing English translation for spongeapi: assets/spongeapi/lang/en_us.lang

and every time I add a new mod I get the same for it

[01:22:05] [Server thread/WARN] [FML]: Missing English translation for griefprevention: assets/griefprevention/lang/en_us.lang
[01:22:05] [Server thread/WARN] [FML]: Missing English translation for luckperms: assets/luckperms/lang/en_us.lang
[01:22:05] [Server thread/WARN] [FML]: Missing English translation for nt-rpg: assets/nt-rpg/lang/en_us.lang
[01:22:05] [Server thread/WARN] [FML]: Missing English translation for nt-core: assets/nt-core/lang/en_us.lang

I tried older builds, I also tried with 1.11.2, same problem. This problem does not exist on Linux with the same build.

ignore those, they are just warnings from forge

The Windows 10 version of Minecraft is coded in C++, not Java. You will need to use the PC version of Minecraft which is Java based to use Sponge, Forge, and any mods or plugins you have.