When I connect to my own server, "Failed to login: Invalid session game and try restarting the launcher." (Actually, when I enter other servers, this article appears.)

[theguy1212]

[_Tarna_]

Are you using cracked minecraft? Minehut does not support cracked accounts. You need to have a premium account from minecraft.net to be able to play on Minehut. 

[JuiceBox7879]

As it says, restart your Minecraft launcher. You shouldn't be able to log on to any servers if your minecraft keeps showing that message.