Missing Dependencies in Modded Games
A missing dependency means one mod needs another mod, library, or loader to work. The main mod may be installed correctly, but the game can still crash if one of its required pieces is missing or the wrong version.
Quick answer
To fix a missing dependency error, check the mod page for required files, install the missing required mod or library, make sure it matches your game and loader version, then relaunch the game and check a fresh log.
The mod is asking for something else
Think of it like downloading a game expansion without the base game. The mod might be real and installed, but it cannot fully run until the thing it depends on is also installed.
Signs your crash is a dependency issue
The log may say that one mod depends on another mod that is not installed.
The needed mod is installed, but it may be too old, too new, or made for a different game version.
A mod may require Forge, Fabric, Quilt, SMAPI, SKSE, or another loader version that does not match your setup.
Sometimes the main mod is present, but it fails during startup because a helper library is missing.
What to check first
Common example
In Stardew Valley, a mod may need Content Patcher. If Content Patcher is missing, outdated, or not loaded correctly, the mod depending on it can fail even though the original mod is sitting in the Mods folder.
FixMyGame tip
If FixMyGame says a dependency is missing but you already installed it, run the game again and load the newest log. The app needs a fresh log to confirm whether the dependency is still failing.
Related Guides
How to Read a Crash Log
Learn where to look in a log when the error text feels overwhelming.
Fresh Log vs Old Log
Make sure you are diagnosing the crash that just happened.
Mod Conflicts
Learn how two mods can interfere with each other.
Safe Repair Preview
Understand what FixMyGame can safely suggest before changing files.