Error-Server

Server-like mechanics for singleplayer and Essential multiplayer.

by Error39k9kEconomy Game mechanics Utility

Fabric

Loaders: Fabric
Downloads on Modrinth: 93
Followers on Modrinth: 0
version: 1
Updated: June 8, 2026Jun 8
Published: in 2026

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update — some fixs with gui · swipe

At a glance

Runs on Fabric

For Minecraft 1.20.1

Server only — players don't need to install it

Latest version — 1.3B from June 8, 2026

Requires Fabric API

License MIT — free

Where it's needed

In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.20.1

⚠️ This mod is currently in active development. (Polish Version)

Error Server

Bring multiplayer server mechanics into your singleplayer world or Essential multiplayer sessions.

Features

Economy

Money system
Coin system
100 Money = 1 Coin
Buy and sell items
/money
/coins
/sell all

Shop

Clickable GUI shop
Categories:
- Building Blocks
- Wood
- Food
- Mob Drops
- Ores
- Farming
Buy and sell items directly from GUI
Quantity selector

Auction House

/ah
Sell items to other players
Buy items from other players
Money and Coin listings

Ranks

Owner
Admin
Mod
Support
VIP
Gracz

Decorated chat prefixes and permission hierarchy.

Kits

Starter Kit:

Green leather armor
Stone tools
32 food
10 minute cooldown

VIP Kit:

Full iron armor
Iron tools
Shield
64 food
10 minute cooldown

Server Features

Spawn system
/spawn
/setspawn
Statistics system
Playtime tracking
Decorated scoreboard
Online player counter
Rank display
Economy display

Essential Multiplayer Support

Works in:

Singleplayer
LAN Worlds
Essential Multiplayer Sessions

Commands

/shop
/sell all

/ah
/ah wystaw <amount> <price>
/ah wystawcoiny <amount> <price>
/ah kup <id>

/kit starter
/kit vip

/spawn
/setspawn

/stats
/money
/coins
/coins convert <money>

/rank <player> <rank>

Version

Minecraft: 1.20.1
Loader: Fabric
Requires: Fabric API

FAQ

How to install Error-Server?

Install Fabric for your Minecraft version, download Error-Server for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Error-Server support?

Error-Server has builds for Minecraft 1.20.1.

Is Error-Server needed on the server?

Server only — players don't need to install it

License and source

MIT Licensefree to use and share with credit to the author

Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders