null# Minecraft launcher log started at 2025-10-13 21:17:13
# Profile: 1.21.6
[21:17:15] [Datafixer Bootstrap] [com.mojang.datafixers.DataFixerBuilder/INFO]:
269 Datafixer optimizations took 350 milliseconds
[21:17:19] [Render thread] [com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService/INFO]:
Environment: Environment[sessionHost=https://sessionserver.mojang.com, servicesHost=https://api.minecraftservices.com, name=PROD]
[21:17:19] [Render thread] [fud/INFO]:
Setting user: {MINECRAFT_USERNAME}
[21:17:20] [Render thread] [fud/INFO]:
Backend library: LWJGL version 3.3.3+5
[21:17:20] [Render thread] [fud/WARN]:
Detected unexpected shutdown during last game startup: resetting fullscreen mode
[21:17:22] [Render thread] [fud/INFO]:
Using optional rendering extensions: