I can't access my MC: Forge server?

Ar
- in Worlds
7

I have a Minecraft Forge server with the Valhelsia 3 - 1.16.4 Modpack.
I wanted to play on it with a friend but I can't figure it out.
On the right side of the server in Minecraft it says Incompatible Vanilla Server,
when I say joine: Internal Exception: java.lang.ClassCastException: net.minecraft.world.biome.Biome $ Category can't be cast to java.lang.String

I can t access my MC: Forge server
Ja

So to me it looks like a typical programming error, since a biome could not be set as a string. But it could also simply be due to mods that do not get along with each other.

Ar

Well it works with single player worlds but also not with other servers (e.g. Hypixel) think it is the client with the mods

Ja

It is clear that it is not possible with Hypixel. This is due to the mods you have. If you want to have your own server with mods, then you must not only have the mods installed on your client, but you must also have the mods installed on the server.

Ar

I have too

Ja

Then it will be some other mistake. Unfortunately, I can't help you with that.

Ar

OK thanks

Gu

delete the world folder in your server and then it auto generates a new one

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