What do you think the resolution is? I've tried using mobile hotspot too to see if the router is just acting up, and it did the same thing.

As soon as my friend joined my hosted game with bots, the error returns "connection interrupted". We're on the same network (Wi-Fi). So we used 127.0.0.1 and local IP too to connect to no avail. We turned off firewall too if that helps. Any ideas?

Here are the error messages: https://imgur.com/a/IbC0sQx