Any time i try to join my realm or a multiplayer server its tell me my session is invalid and to restart my game and launcher. Despite doing all that,uninstalling, and restarting my computer the problem persists.

Put the summary of the bug you're having here

What I expected to happen was...:
That I would be able to join my realm or a server

What actually happened was...:
The game displays a message stating that my session is invalid and to restart my game and launcher

Steps to Reproduce:
1. Boot up Launcher
2. Launch Minecraft
3. Attempt to join realm/server