Fabric: Minecraft game provider couldn't locate the game!

What the log looks like

java\.lang\.RuntimeException: Minecraft game provider couldn't locate the game!
Minecraft game provider couldn't locate the game! The game may be absent from the class path

How to fix it

1. Run the vanilla (unmodded) profile for that exact Minecraft version once in your launcher so it downloads a clean copy of the base game JAR, then run your Fabric profile again.
2. Check your launcher's versions folder (such as .minecraft/versions/) for any 0 KB or corrupted .jar files, delete them, and reinstall Fabric Loader for that version.
3. If this is a Fabric server using fabric-server-launch.jar, verify that the matching vanilla server.jar is in the server directory and is not empty, or re-run the Fabric Server Installer to generate a fresh executable server JAR.
4. If you are developing or using a custom launcher that loads JARs dynamically without updating java.class.path, add theJVM argument -Dfabric.gameJarPath=<path-to-minecraft.jar> so Fabric Loader knows where to find the game.
5. Update Fabric Loader to the latest version if you are launching a newer snapshot, or confirm that the Minecraft version you are trying to run is officially supported by Fabric.

Check your own log