Unsupported Version error

[ashen sequoia]

My friends try to join our Minecraft server and we get that error. here is the dump. There's no errors in the console so I assume it's a network issue?

[minor spear]

<:geyser:723981877773598771> Geyser Spigot

Git info

Latest: Yes
Commit: 1dc3f41
Branch: master

Platform

Spigot

Listen address

0.0.0.0:25690 (internal IP)

Remote address

***:25577

Auth type

FLOODGATE

Server version

1.21.8-17-dbc367b (MC: 1.21.8)

Autoconfigured remote?

Yes

Aug 25, 2025, 1:28 AM

[muted lion]

Is this Minecraft server being hosted on your computer?

Or is this a Minecraft server that you have access to on a website?