"Failed to synchronize registry data from server"

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  • So I made a small custom modpack with pixelmon to spice it up a tiny bit but every time i try to join the server it says

    "Failed to synchronize registry data from server" I have looked over all my mods and they say the right version unless i missed something. I have also deleted both config files for myself and the server. I tried reading other posts but i haven't found anything that has worked so far.

    I copied the log to mclo.gs and here is the log LOG.