I'm just really confused. This bug only applies to modpacks made by me. i have tried using different launchers prism, modrinth etc. I have tried with multiple modpacks. All of this has not prevented this bug.

Relevant part of log is here:

[06Jun2025 16:18:49.882] [main/ERROR] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Failed to build unique mod list after mod discovery.
net.minecraftforge.fml.loading.EarlyLoadingException: Duplicate mods found
    at net.minecraftforge.fml.loading.UniqueModListBuilder.buildUniqueList(UniqueModListBuilder.java:87) ~[loader-47.2.2.jar:47.2]
    at net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer.discoverMods(ModDiscoverer.java:106) ~[loader-47.2.2.jar:47.2]
    at net.minecraftforge.fml.loading.FMLLoader.beginModScan(FMLLoader.java:164) ~[loader-47.2.2.jar:47.2]
    at net.minecraftforge.fml.loading.FMLServiceProvider.beginScanning(FMLServiceProvider.java:86) ~[loader-47.2.2.jar:47.2]
    at cpw.mods.modlauncher.TransformationServiceDecorator.runScan(TransformationServiceDecorator.java:112) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.TransformationServicesHandler.lambda$runScanningTransformationServices$8(TransformationServicesHandler.java:100) ~[modlauncher-10.0.9.jar:?]
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?]
    at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1779) ~[?:?]
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?]
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?]
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575) ~[?:?]
    at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260) ~[?:?]
    at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616) ~[?:?]
    at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622) ~[?:?]
    at java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627) ~[?:?]
    at cpw.mods.modlauncher.TransformationServicesHandler.runScanningTransformationServices(TransformationServicesHandler.java:102) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:55) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:88) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?]
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
    at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
    at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67) ~[?:?]
    at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) ~[?:?]
    at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) ~[?:?]
    at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) ~[?:?]
[06Jun2025 16:18:49.894] [main/ERROR] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Mod Discovery failed. Skipping dependency discovery.
 

 

Full log

[06Jun2025 16:18:48.612] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--username, DeltaBlack_, --version, 1.20.1, --gameDir, C:/Users/sammi/AppData/Roaming/PrismLauncher/instances/SITE 111/minecraft, --assetsDir, C:/Users/sammi/AppData/Roaming/PrismLauncher/assets, --assetIndex, 5, --uuid, 0ff86c0727f444f1a926b954a58d8c44, --accessToken, ????????, --userType, msa, --versionType, release, --launchTarget, forgeclient, --fml.forgeVersion, 47.1.105, --fml.fmlVersion, 47.2.2, --fml.mcVersion, 1.20.1, --fml.mcpVersion, 20230612.114412, --width, 854, --height, 480]
[06Jun2025 16:18:48.615] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 10.0.9+10.0.9+main.dcd20f30 starting: java version 17.0.8 by Microsoft; OS Windows 11 arch amd64 version 10.0
[06Jun2025 16:18:49.050] [main/INFO] [net.minecraftforge.fml.loading.ImmediateWindowHandler/]: Loading ImmediateWindowProvider fmlearlywindow
[06Jun2025 16:18:49.173] [main/INFO] [EARLYDISPLAY/]: Trying GL version 4.6
[06Jun2025 16:18:49.311] [main/INFO] [EARLYDISPLAY/]: Requested GL version 4.6 got version 4.6
[06Jun2025 16:18:49.496] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/C:/Users/sammi/AppData/Roaming/PrismLauncher/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%23152!/ Service=ModLauncher Env=CLIENT
[06Jun2025 16:18:49.502] [pool-2-thread-1/INFO] [EARLYDISPLAY/]: GL info: AMD Radeon Graphics GL version 4.6.0 Core Profile Context 24.10.21.03.240627, ATI Technologies Inc.
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "[1.20.1] SecurityCraft v1.10.0.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "ad_astra-forge-1.20.1-1.15.20.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "architectury-9.2.14-forge.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "bellsandwhistles-0.4.5-1.20.x-Create6.0+.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "botarium-forge-1.20.1-2.3.4.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "chloride-FORGE-mc1.20.1-v1.7.2.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "copycats-3.0.1+mc.1.20.1-forge.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "Create Encased-1.20.1-1.7.1-fix2.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "create-1.20.1-6.0.4.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "create_enchantment_industry-1.3.2-for-create-6.0.4.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.713] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "create_security-0.1.2-forge-1.20.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.714] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "createdeco-2.0.3-1.20.1-forge.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.714] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "createframed-1.20.1-1.6.5.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.714] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "creategoggles-1.20.1-6.0.0-[FORGE].jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "Crystal-Clear-2.1-Beta-forge.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "design_decor-0.4.0b-1.20.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "embeddium-0.3.31+mc1.20.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "entityculling-forge-1.7.4-mc1.20.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "interiors-0.5.6+forge-mc1.20.1-local.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "Jade-1.20.1-Forge-11.13.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "jei-1.20.1-forge-15.20.0.112.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "ManyIdeasCore-1.20.1-1.4.2.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "ManyIdeasDoors-1.20.1-1.2.3.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "prma-1.20.1-0.4.4-cr6.0-SIMPLE-beta-all.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.715] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "RecipesLibrary-1.20.1-2.0.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "resourcefulconfig-forge-1.20.1-2.1.3.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "resourcefullib-forge-1.20.1-2.1.29.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "rubidium-extra-0.5.4.4+mc1.20.1-build.131.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "rubidium-mc1.20.1-0.7.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "skinlayers3d-forge-1.7.5-mc1.20.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "Steam_Rails-1.6.7+forge-mc1.20.1.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "tacz-1.20.1-1.1.5.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "Xaeros_Minimap_25.2.6_Forge_1.20.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.716] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "XaerosWorldMap_1.39.9_Forge_1.20.jar" of type MOD with provider {mods folder locator at C:\Users\sammi\AppData\Roaming\PrismLauncher\instances\SITE 111\minecraft\mods}
[06Jun2025 16:18:49.853] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\sammi\AppData\Roaming\PrismLauncher\libraries\net\neoforged\fancymodloader\core\47.2.2\core-47.2.2.jar is missing mods.toml file
[06Jun2025 16:18:49.856] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\sammi\AppData\Roaming\PrismLauncher\libraries\net\neoforged\fancymodloader\language-java\47.2.2\language-java-47.2.2.jar is missing mods.toml file
[06Jun2025 16:18:49.858] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\sammi\AppData\Roaming\PrismLauncher\libraries\net\neoforged\fancymodloader\language-lowcode\47.2.2\language-lowcode-47.2.2.jar is missing mods.toml file
[06Jun2025 16:18:49.861] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file C:\Users\sammi\AppData\Roaming\PrismLauncher\libraries\net\neoforged\fancymodloader\language-minecraft\47.2.2\language-minecraft-47.2.2.jar is missing mods.toml file
[06Jun2025 16:18:49.866] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "core-47.2.2.jar" of type LIBRARY with provider net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator@3c2fa57a
[06Jun2025 16:18:49.867] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "language-java-47.2.2.jar" of type LANGPROVIDER with provider net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator@3c2fa57a
[06Jun2025 16:18:49.867] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "language-lowcode-47.2.2.jar" of type LANGPROVIDER with provider net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator@3c2fa57a
[06Jun2025 16:18:49.867] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "language-minecraft-47.2.2.jar" of type LANGPROVIDER with provider net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator@3c2fa57a
[06Jun2025 16:18:49.867] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "client-1.20.1-20230612.114412-srg.jar" of type MOD with provider net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator@3c2fa57a
[06Jun2025 16:18:49.867] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "forge-1.20.1-47.1.105-universal.jar" of type MOD with provider net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator@3c2fa57a
[06Jun2025 16:18:49.872] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Found mod file "events-47.2.2.jar" of type GAMELIBRARY with provider net.minecraftforge.fml.loading.moddiscovery.BuiltinGameLibraryLocator@38834000
[06Jun2025 16:18:49.881] [main/ERROR] [net.minecraftforge.fml.loading.UniqueModListBuilder/LOADING]: Found duplicate mods:
    Mod ID: 'rubidium' from mod files: rubidium-mc1.20.1-0.7.1.jar, embeddium-0.3.31+mc1.20.1.jar
[06Jun2025 16:18:49.882] [main/ERROR] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Failed to build unique mod list after mod discovery.
net.minecraftforge.fml.loading.EarlyLoadingException: Duplicate mods found
    at net.minecraftforge.fml.loading.UniqueModListBuilder.buildUniqueList(UniqueModListBuilder.java:87) ~[loader-47.2.2.jar:47.2]
    at net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer.discoverMods(ModDiscoverer.java:106) ~[loader-47.2.2.jar:47.2]
    at net.minecraftforge.fml.loading.FMLLoader.beginModScan(FMLLoader.java:164) ~[loader-47.2.2.jar:47.2]
    at net.minecraftforge.fml.loading.FMLServiceProvider.beginScanning(FMLServiceProvider.java:86) ~[loader-47.2.2.jar:47.2]
    at cpw.mods.modlauncher.TransformationServiceDecorator.runScan(TransformationServiceDecorator.java:112) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.TransformationServicesHandler.lambda$runScanningTransformationServices$8(TransformationServicesHandler.java:100) ~[modlauncher-10.0.9.jar:?]
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?]
    at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1779) ~[?:?]
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?]
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?]
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575) ~[?:?]
    at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260) ~[?:?]
    at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616) ~[?:?]
    at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622) ~[?:?]
    at java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627) ~[?:?]
    at cpw.mods.modlauncher.TransformationServicesHandler.runScanningTransformationServices(TransformationServicesHandler.java:102) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:55) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:88) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?]
    at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?]
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
    at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
    at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67) ~[?:?]
    at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) ~[?:?]
    at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) ~[?:?]
    at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) ~[?:?]
[06Jun2025 16:18:49.894] [main/ERROR] [net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer/SCAN]: Mod Discovery failed. Skipping dependency discovery.
 

 

3 hours ago, deltablack_ said:

[06Jun2025 16:18:49.881] [main/ERROR] [net.minecraftforge.fml.loading.UniqueModListBuilder/LOADING]: Found duplicate mods:
    Mod ID: 'rubidium' from mod files: rubidium-mc1.20.1-0.7.1.jar, embeddium-0.3.31+mc1.20.1.jar

Rubidium and Embeddium are versions of the same mod, you can only have one. I believe Embeddium is the one that's actively maintained.