I Can't Get In The Server?

I have recently tried to enter the server, and I have been rewarded with an error message. Does anyone know how to fix this? Is it a server issue or my client issue?
I would be very grateful if you answer these questions bellow,

King Regards,
A group of particles known as Ghalt

 

What is the error message?

 

Have you tried restarting your computer? That always refreshes minecraft.

Oh, and maybe upgrade from a toaster heheheheh(wynn memes)

 

...screenshot?

 

Sounds like you get the message when choosing your class. If it doesn't work after a few tries I'm afraid your class data is broken. You can get more information on this GitHub thread. Especially read Moe-Ronickah's long post for more.

 

If you're entering the server in regards to reaching the lobby, you might be receiving a message that says something like "Cannot connect to fallback server". If that is the case, try changing your IP to "play.wynncraft.org" or something similar (changing the suffix of the IP). If that doesn't work, waiting a while will usually let you in. This glitch is not permanent and will eventually go away.

As for another type of glitch (such as not being able to enter the actual world), that might be more complicated. Try restarting Minecraft and your computer, and try switching Minecraft versions to see if it works. If nothing works, your class data may be corrupted and you may be forced to delete your class (though, that isn't a big deal if your class is a low level, as you can easily reach that level again).