

⚠️ 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
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as errora-kity-1.0.0.jar — drop this file into the mods folder
- Download size: 28 KB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.