To fix Internal Exception: java.io.IOException, An existing connection was forcibly closed by the remote host Minecraft error, you need to follow the given solutions.

Minecraft players who are using an outdated version of Java will be greeted with this message How can players fix the JNI Error?

Simply catch the ConcurrentModificationException, log the error, and move on The obvious way to fix Java’s ConcurrentModificationException is to not concurrently modify a collection. Of course, this ...