THIS ISNT FOR THE VERSION 1.13. READ!

I don't like how that happened.
The fact is that the day before Minecraft worked, and today no longer.

I open the Launcher, and I decide to play a version, 1.8, with the LabyMod, and after 10 seconds it pops up but immediately after Minecraft closes to the inscription "Mojang ".

So I decide to play a new boot option 1.12, but it happens the same.
Before I opened Minecraft today though, I had added Minecraft in my games list on Steam, maybe that's the error?
After that then I decide to open the log is what is written is this(images) thanks for the support!