FixContainerSlotExploit
This mod implements a fix from Paper that validates container slots and buttons to prevent log spam, lag and potential crashes.
About this Mod
This mod implements a fix from Paper that validates container slots and buttons to prevent log spam, lag and potential crashes.
This exploit affects Fabric, Forge, Quilt and Paper servers.
Available Versions
How to Install FixContainerSlotExploit on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.2).
Install Mod
Open the mod browser in the dashboard and search for "FixContainerSlotExploit". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.2, 1.20.1, 1.20 (+7 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
FixContainerSlotExploit server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.2). You can switch loaders with one click in the panel.
Is FixContainerSlotExploit compatible with fabric and forge and neoforge?
FixContainerSlotExploit officially supports fabric, forge, neoforge for Minecraft 1.20.2, 1.20.1, 1.20. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with FixContainerSlotExploit – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if FixContainerSlotExploit consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install FixContainerSlotExploit with just one click on your server.