Multiple players can't join, "Failed to synchronize registry data, closing connection"

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  • Recently, two of the players on my friend's private server (including myself) started having this issue:
    "Failed to synchronize registry data, closing connection"
    No new mods have been installed, and (in my case) every single mod on my client is the same as the server, down to the version.
    I'm really confused and quite frustrated considering this started happening out of the blue and nobody has changed anything, so if anyone knows how to fix this, it'd be immensely appreciated.
    Here's the log, if it helps: https://mclo.gs/PhzpSMy

  • Roman

    Closed the thread.