I can't join my Sky Factory 4 Server how can I fix?

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    Hello, I made a sky factory 4 server and me and my friend tried to join. My friend joined just fine but I got this error message
    Internal Exception: java.IOException: An established connection was aborted by the software in your host machine

    Does anyone know what this means?

    (btw me and my friend are using the modpack on the curseforge app)

  • Roman

    Closed the thread.