Facepalm704

So I start up a Forge server, I followed every step everyone said to make and mod one. This is my first time doing this and reading other peoples posts about the same problem did not help. The server will load perfectly fine, the only problem is joining it. When I try to join the server, it will load for a few seconds, then pop an error that says "Incomplete set of tags received from server. Please contact server operator"