Résolu [URGENT] Crash en 1.12

Bonjour, quand j'ouvre minecraft, quelque seconde plus tard sa plante, sa ferme et la console me dit :

Code (cpp):

[18:48:38] [Client thread/INFO]: Setting user: ******
[18:48:39] [Client thread/INFO]: LWJGL Version: 2.9.4
[18:48:41] [Client thread/INFO]: Reloading ResourceManager: Default
[18:48:41] [Sound Library Loader/INFO]: Starting up SoundSystem...
[18:48:41] [Thread-3/INFO]: Initializing LWJGL OpenAL
[18:48:41] [Thread-3/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[18:48:41] [Thread-3/INFO]: OpenAL initialized.
[18:48:42] [Sound Library Loader/INFO]: Sound engine started
[18:48:45] [Client thread/INFO]: Created: 1024x512 textures-atlas
[18:48:46] [Client thread/INFO]: Narrator library for x86 successfully loaded
[18:48:47] [Realms Notification Availability checker #1/INFO]: Could not authorize you against Realms server: Invalid session id

Et sa fait tout le temps pareil, aidez moi svp
Merci