Packet Exception Logger
by Redned
Packet Exception Logger writes packet errors that occur in the client logs to a separate, readable output for debugging.
What it does
A Fabric mod that prints packet exceptions from the client logs, so a problem in network traffic can be traced without searching the full log. Its main purpose is as a developer tool that lets server owners track down packet issues and exceptions. It works alongside StackDeobfuscator, which deobfuscates the stack traces the mod produces. Only the Fabric loader is supported, with files published for 1.21 – 26.2 across 16 release versions, under the MIT License, and the code is open source.
Key features
Packet exception output
Packet exceptions raised during play are printed out instead of being left buried in the client log.
Debugging for server owners
The output helps server owners find the cause of packet problems that players report.
Stack trace deobfuscation
Stack traces the mod generates can be run through StackDeobfuscator to read the original class and method names.
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Packet Logger is a Fabric mod for 1.16.2 – 1.18.2 that runs client-side only and is open source under the MIT License. Where Is My Packet? targets 1.21.10 – 26.1.2 with the same client-side environment and MIT License, and is also open source. Packet Spy covers 1.21 – 26.3 under the MIT License and is open source, while Build Bugs covers 1.20.2 – 26.3 and is open source as well.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Packet Exception Logger | Fabric | 1.21 – 26.2 | Client or server, optional | 2024-11-22 |
| Packet Logger | Fabric | 1.16.2 – 1.18.2 | Client-side only | 2024-01-15 |
| Where Is My Packet? | Fabric | 1.21.10 – 26.1.2 | Client-side only | 2026-04-20 |
| Packet Spy | Fabric | 1.21 – 26.3 | Client-side only | 2026-10-02 |
| Build Bugs | Fabric | 1.20.2 – 26.3 | Client-side only | 2026-10-01 |
Questions
Does Packet Exception Logger need Fabric API?
In the catalog
Packet Exception Logger is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 13,894 mods support Minecraft 26.2.
More from Redned
Similar mods
What the author says
A simple Fabric mod to print out packet exceptions when they occur in client logs. This is primarily a developer tool and is designed to help server owners debug packet issues or exceptions.
Official listing
- Modrinth page
- modrinth.com/mod/packet-exception-logger
- Owner
- Redned
- Published
- 2024-07-01
- Updated on Modrinth
- 2024-11-22
- Facts verified
- 2026-10-15