Outdated Geyser Proxy

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  • I have two brothers that have Minecraft Bedrock Edition while I have Java Edition, so I made an Aternos server with Spigot and Bukkit so we can play together, but lately it hasn't been letting them join with the message 'Outdated Geyser Proxy'. I have been restarting and reinstalling and downgrading and upgrading it again but nothing works. It has been like this for a few months now. By the way, we all play the latest versions for our Minecraft editions. Could you please help?