Failed to synchronize registry data from server, closing connection

The Aternos forums are now deprecated

Learn more about this change here.

For help regarding Aternos, we recommend you to visit our support center.

    Hello, im want to play with my friends minecraft 1.16.5 with mods.

    Whenever I try to connect to it, it just says 'Failed to synchronize registry data from server , closing connection' I have tried deleting the config files and re-downloading all the mods, and also checking that they're the right version. This is super annoying, please someone help.

    The latest log link: Forge 1.16.5 Client Log [#kbXa6FU] - mclo.gs

    Client has mods that are missing on server [betterstrongholds] and check if you have unnamedanimalmod installed on the server and pc with the exact same versions