Please do a quick search on GitHub issues first, there might be already a duplicate issue for the one you are about to create. If the bug is trivial, just go ahead and create the issue. Otherwise, ...

Some Minecraft users see an error message saying Connection Lost, Internal Exception: java.io.IOException, An existing connection was forcibly closed by the remote ...

You can create a release to package software, along with release notes and links to binary files, for other people to use. Learn more about releases in our docs.