I Really need help with my server!

Ho… weird I have do the update again and now I have a error when the server launch https://gyazo.com/301c0fcd2346f6faefee3002d5479450

UPDATE

I change the port because something already use the port 30120 but I get the same error again when I leave the server (and close Fivereborn after) https://gyazo.com/3aafd27981f8bfef803aafd8fada05f4

Ok so I have this error but I can join after, no red box for the moment but I can’t see anymore log in the console (ex. People connect)

EDIT AGAIN

Now when I join the server after the error in the console I have the red box