After updating to macOS High Sierra, I noticed that minecraft gets stuck on the "Mojang" Screen. This has not been happening while I was on seirra.
I have tried to reinstall minecraft and Clear the minecraft
folder in Application Support
.
It is fine if the solution requires me to re-install minecraft because I have a copy of my worlds.
If it helps you, this is the startup log:
Note: It Freezes at the
13:34:55 cdp Created: 1024x512 textures-atlas
13:34:48 launcher Preparing to launch minecraft client for 1.12.2
13:34:49 launcher Checking installations.
13:34:49 launcher Minecraft client 1.12.2 is ready to start.
13:34:49 launcher Starting!
13:34:49 launcher Using default game log configuration client-1.12.xml (outputs XML)
13:34:50 bib Setting user: NullCoderExists
13:34:52 bib LWJGL Version: 2.9.4
13:34:52 cev Reloading ResourceManager: Default
13:34:52 chm Starting up SoundSystem...
13:34:52 chm Initializing LWJGL OpenAL
13:34:52 chm (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
13:34:52 chm OpenAL initialized.
13:34:53 chm Sound engine started
13:34:55 cdp Created: 1024x512 textures-atlas
Related issues
Comments

Yes
See MC-124460.

I deleted and disconnected discord but it still doesn't work. Can this issue be reopened?

I have the same issue even after reinstalls; please fix it.
Are you using Discord?