fabric-loader "Minecraft game provider couldn't locate the game! The game may be absent from the class path, lacks some expected files, suffers from jar corruption or is of an unsupported variety/version."

Hi, i am trying to make a mod and when i run it it gives me this error. The "run" folder is empty.

Nov 29 '24 14:11 thorminate

Please provide the completed log in your IDE (e.g. Jetbrains IDLE). Without these info, we can't find out what was going wrong.

Dec 08 '24 06:12 burningtnt

Please provide the completed log in your IDE (e.g. Jetbrains IDLE). Without these info, we can't find out what was going wrong.

I encountered the same issue, I am developing a Fabric mod and when I try to run the "Minecraft Client" in IntelliJ IDEA, I get the following error:

Uncaught exception in thread "main"
java.lang.RuntimeException: Minecraft game provider couldn't locate the game! The game may be absent from the class path, lacks some expected files, suffers from jar corruption or is of an unsupported variety/version.
    at net.fabricmc.loader.impl.launch.knot.Knot.createGameProvider(Knot.java:212)
    at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:130)
    at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
    at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
    at net.fabricmc.devlaunchinjector.Main.main(Main.java:86)

and then I check the run folder in project, the file fabricloader.log:

[15:33:05] [WARN] [FabricLoader/Knot]: Class path entries reference missing files: E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\build\classes\java\main, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\build\resources\main, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\minecraftMaven\net\minecraft\minecraft-merged-abba00472f\1.21.4-net.fabricmc.yarn.1_21_4.1.21.4+build.7-v2\minecraft-merged-abba00472f-1.21.4-net.fabricmc.yarn.1_21_4.1.21.4+build.7-v2.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-api\0.114.0+1.21.4\fabric-api-0.114.0+1.21.4.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-transfer-api-v1\5.4.9+efa825c904\fabric-transfer-api-v1-5.4.9+efa825c904.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-api-lookup-api-v1\1.6.86+b1caf1e904\fabric-api-lookup-api-v1-1.6.86+b1caf1e904.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-blockrenderlayer-v1\2.0.8+7feeb73304\fabric-blockrenderlayer-v1-2.0.8+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-client-tags-api-v1\1.1.29+20ea1e2304\fabric-client-tags-api-v1-1.1.29+20ea1e2304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-command-api-v1\1.2.62+f71b366f04\fabric-command-api-v1-1.2.62+f71b366f04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-commands-v0\0.2.79+df3654b304\fabric-commands-v0-0.2.79+df3654b304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-command-api-v2\2.2.41+e496eb1504\fabric-command-api-v2-2.2.41+e496eb1504.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-content-registries-v0\9.1.14+7feeb73304\fabric-content-registries-v0-9.1.14+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-data-generation-api-v1\22.2.4+20ea1e2304\fabric-data-generation-api-v1-22.2.4+20ea1e2304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-convention-tags-v1\2.1.11+7f945d5b04\fabric-convention-tags-v1-2.1.11+7f945d5b04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-convention-tags-v2\2.10.1+e7d3c6e504\fabric-convention-tags-v2-2.10.1+e7d3c6e504.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-data-attachment-api-v1\1.4.6+9aea556b04\fabric-data-attachment-api-v1-1.4.6+9aea556b04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-entity-events-v1\2.0.12+60fccc7604\fabric-entity-events-v1-2.0.12+60fccc7604.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-events-interaction-v0\4.0.2+a4eebcf004\fabric-events-interaction-v0-4.0.2+a4eebcf004.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-gametest-api-v1\2.0.21+7feeb73304\fabric-gametest-api-v1-2.0.21+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-item-api-v1\11.1.14+203e6b2304\fabric-item-api-v1-11.1.14+203e6b2304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-item-group-api-v1\4.1.23+7feeb73304\fabric-item-group-api-v1-4.1.23+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-lifecycle-events-v1\2.5.4+bf2a60eb04\fabric-lifecycle-events-v1-2.5.4+bf2a60eb04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-loot-api-v2\3.0.33+3f89f5a504\fabric-loot-api-v2-3.0.33+3f89f5a504.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-loot-api-v3\1.0.21+203e6b2304\fabric-loot-api-v3-1.0.21+203e6b2304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-message-api-v1\6.0.25+7feeb73304\fabric-message-api-v1-6.0.25+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-model-loading-api-v1\4.2.0+8ca2ae8d04\fabric-model-loading-api-v1-4.2.0+8ca2ae8d04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-recipe-api-v1\8.0.6+9ceeb58c04\fabric-recipe-api-v1-8.0.6+9ceeb58c04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-screen-handler-api-v1\1.3.110+7feeb73304\fabric-screen-handler-api-v1-1.3.110+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-registry-sync-v0\6.1.3+e7d3c6e504\fabric-registry-sync-v0-6.1.3+e7d3c6e504.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-networking-api-v1\4.3.9+f371ccb904\fabric-networking-api-v1-4.3.9+f371ccb904.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-object-builder-api-v1\18.0.8+d70d2c0604\fabric-object-builder-api-v1-18.0.8+d70d2c0604.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-particles-v1\4.0.14+7feeb73304\fabric-particles-v1-4.0.14+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-renderer-indigo\2.0.2+84404cdd04\fabric-renderer-indigo-2.0.2+84404cdd04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-renderer-api-v1\5.0.2+84404cdd04\fabric-renderer-api-v1-5.0.2+84404cdd04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-rendering-fluids-v1\3.1.19+7feeb73304\fabric-rendering-fluids-v1-3.1.19+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-rendering-v1\10.1.2+b874120c04\fabric-rendering-v1-10.1.2+b874120c04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-screen-api-v1\2.0.38+7feeb73304\fabric-screen-api-v1-2.0.38+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-tag-api-v1\1.0.2+20ea1e2304\fabric-tag-api-v1-1.0.2+20ea1e2304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-api-base\0.4.54+b47eab6b04\fabric-api-base-0.4.54+b47eab6b04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-biome-api-v1\15.0.6+b1c29d8e04\fabric-biome-api-v1-15.0.6+b1c29d8e04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-block-api-v1\1.0.31+7feeb73304\fabric-block-api-v1-1.0.31+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-rendering-data-attachment-v1\0.3.57+73761d2e04\fabric-rendering-data-attachment-v1-0.3.57+73761d2e04.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-block-view-api-v2\1.0.19+7feeb73304\fabric-block-view-api-v2-1.0.19+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-client-gametest-api-v1\3.0.0+1f6471e604\fabric-client-gametest-api-v1-3.0.0+1f6471e604.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-crash-report-info-v1\0.3.6+7feeb73304\fabric-crash-report-info-v1-0.3.6+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-dimensions-v1\4.0.10+7feeb73304\fabric-dimensions-v1-4.0.10+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-game-rule-api-v1\1.0.62+7feeb73304\fabric-game-rule-api-v1-1.0.62+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-keybindings-v0\0.2.54+df3654b304\fabric-keybindings-v0-0.2.54+df3654b304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-key-binding-api-v1\1.0.56+7feeb73304\fabric-key-binding-api-v1-1.0.56+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-resource-conditions-api-v1\5.0.13+203e6b2304\fabric-resource-conditions-api-v1-5.0.13+203e6b2304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-resource-loader-v0\3.0.11+b1caf1e904\fabric-resource-loader-v0-3.0.11+b1caf1e904.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-sound-api-v1\1.0.32+7feeb73304\fabric-sound-api-v1-1.0.32+7feeb73304.jar, E:\Java-Project\Fabric妯＄粍\EnhancedFireworks-1.21.4\.gradle\loom-cache\remapped_mods\net_fabricmc_yarn_1_21_4_1_21_4_build_7_v2\net\fabricmc\fabric-api\fabric-transitive-access-wideners-v1\6.3.2+56e78b9b04\fabric-transitive-access-wideners-v1-6.3.2+56e78b9b04.jar - the game may not load properly!
[15:33:05] [ERROR] [FabricLoader/GameProvider]: Minecraft game provider couldn't locate the game! The game may be absent from the class path, lacks some expected files, suffers from jar corruption or is of an unsupported variety/version.
[15:33:05] [ERROR] [FabricLoader/]: Uncaught exception in thread "main"
java.lang.RuntimeException: Minecraft game provider couldn't locate the game! The game may be absent from the class path, lacks some expected files, suffers from jar corruption or is of an unsupported variety/version.
	at net.fabricmc.loader.impl.launch.knot.Knot.createGameProvider(Knot.java:212)
	at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:130)
	at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
	at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
	at net.fabricmc.devlaunchinjector.Main.main(Main.java:86)

Environment:

Minecraft version: 1.21.4
Fabric Loader version: 0.16.9
IntelliJ IDEA version: 2024.3.1.1
Java version: 21

Jan 03 '25 07:01 ForestRealms

OK so obviously the path E:\Java-Project\Fabric ??? contains non-ASCII characters. You can do any of these tasks:

Rename the folders to pure ASCII chracters.
Check whether there is a mismatch on the charset of dev-injector.conf and the command line.

Jan 03 '25 09:01 burningtnt