I keep getting this error: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection timed out no further information:

I keep getting the above error on my own 1.14.4 server. It is a skyblock randomizer if that's important. I've seen other forum posts with the same error and they say that the world might be the error but my friend can connect to it fine. They also say to try using the port or DynIP to connect but neither works. Some also say that TLauncher might be the cause but I am just using the default Minecraft Launcher. I've also tried following the steps of option 1 (Add exceptions to Firewall Settings in Minecraft Folder) on this website but I'm stuck at steps 7 and 8 because there's no maxwell folder.

Thanks for your help!

I ended up just making another server (I hadn't even started playing on the other one yet) and that somehow worked.

Thanks anyways!

And... it's not working on any other server now. I'm trying to connect to my friend's server but it shows the same error. I tried changing my DNS but that didn't work either. What else could I try?