I am experiencing a crash at startup. The Mojang screen appears, then disappears, then a message appears saying that the game has crashed due to an unexpected error.

Minecraft Log

20:50:29 launcher Preparing to launch minecraft client for 1.12.2
20:50:30 launcher Checking installations.
20:50:30 launcher Minecraft client 1.12.2 is ready to start.
20:50:30 launcher Starting!
20:50:30 launcher Using default game log configuration client-1.12.xml (outputs XML)
20:50:34 bib Setting user: PrincessEmmaline
20:50:40 bib LWJGL Version: 2.9.4
20:50:43 cev Reloading ResourceManager: Default
20:50:45 chm Starting up SoundSystem...
20:50:45 chm Initializing LWJGL OpenAL
20:50:45 chm (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
20:50:56 chm OpenAL initialized.
20:50:56 chm Sound engine started
20:50:59 cdp Created: 1024x512 textures-atlas
20:51:04 com.mojang.text2speech.NarratorWindows Narrator library for x64 successfully loaded