"Invalid Session ID" when logging into Realms

Whenever I try to log into realms, the game blocks and tells me that my Sessions ID is invalid and that I should restart my game. After restarting the game, my computer, logging in and out, uninstalling the game completely, switching versions, and then trying again, I receive the same error. Not only is this infuriating, but when I open the Minecraft output log, I see multiple warnings and few errors (that are presumably causing the error) that I cant seem to find any information about online. What is going on? Here's the output log info:

3989 debugs20 infos1 warning1 error
21:34:53 launcher Preparing to launch minecraft client for 1.12
21:34:53 launcher Checking installations.
21:34:53 launcher Minecraft client 1.12 is ready to start.
21:34:53 launcher Starting!
21:34:53 launcher Using default game log configuration client-1.12.xml (outputs XML)
21:34:54 bhz Setting user: Illerias
21:34:56 bib Skipping bad option: lastServer:
21:34:56 bhz LWJGL Version: 2.9.4
21:34:56 cet Reloading ResourceManager: Default
21:34:57 chk Starting up SoundSystem...
21:34:57 chk Initializing LWJGL OpenAL
21:34:57 chk (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
21:34:57 chk OpenAL initialized.
21:34:57 chk Sound engine started
21:35:00 cdn Created: 1024x512 textures-atlas
21:35:01 com.mojang.text2speech.NarratorWindows Narrator library for x64 successfully loaded
21:35:03 com.mojang.realmsclient.client.RealmsClient Could not authorize you against Realms server: Invalid session id
21:35:03 com.mojang.realmsclient.RealmsMainScreen Realms library version == 1.10.17
21:35:03 com.mojang.realmsclient.client.RealmsClient Could not authorize you against Realms server: Invalid session id
21:35:03 com.mojang.realmsclient.RealmsMainScreen Couldn't connect to realms:
21:35:07 bhz Stopping!
21:35:07 chk SoundSystem shutting down...