LAN not working with Forge

I am trying to make a modded world for both me and my brother. LAN works just fine when playing in vanilla Minecraft, but when we try it with forge, it does not show up for the player trying to connect. I have tried using direct connect but it does not work.

Here is the message that shows up:

io.netty.channel.AbstractChannel$AnnotatedConnectExeption: Connection timed out: no further information:

(our game version is 1.14.4, and we both have exactly the same mods.)