Launcher crash

I opened the launcher and started minecraft like every day when it suddenly crashed and said:"Completely ignored arguments: (--nativeLauncherVersion, 307)
(19:22:08) (Client thread/INFO): Setting user: BenGod
(19:22:08) (Client thread/INFO): (Session ID is <censored>)
(19:22:09) (Client thread/INFO): LWJGL Version: 2.9.4"
Normally my minecraft shall started then but it just crashed. I didn't change anything anywhere by the way.

It crashed

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...I don't know
3.I'm sorry. That is all I can tell you.By the way I don't use any mods.
3. ...