Quote

Exception in thread "main" com.electronwill.nightconfig.core.io.ParsingException: Invalid bare key: ${mod_id}
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.toml.TableParser.parseKey(TableParser.java:175)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.toml.TableParser.parseTableName(TableParser.java:111)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.toml.TomlParser.parse(TomlParser.java:51)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.toml.TomlParser.parse(TomlParser.java:37)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:113)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:219)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:202)
    at MC-BOOTSTRAP/[email protected]/com.electronwill.nightconfig.core.file.WriteAsyncFileConfig.load(WriteAsyncFileConfig.java:138)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.ModFileParser.modsTomlParser(ModFileParser.java:44)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.ModFileParser.readModList(ModFileParser.java:31)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.ModFile.<init>(ModFile.java:79)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.ModFile.<init>(ModFile.java:68)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.AbstractModProvider.createMod(AbstractModProvider.java:52)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator.lambda$scanMods$6(MinecraftLocator.java:43)
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
    at java.base/java.util.AbstractList$RandomAccessSpliterator.forEachRemaining(AbstractList.java:720)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
    at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310)
    at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
    at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
    at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
    at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622)
    at java.base/java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator.scanMods(MinecraftLocator.java:47)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer.discoverMods(ModDiscoverer.java:74)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.FMLLoader.beginModScan(FMLLoader.java:166)
    at MC-BOOTSTRAP/[email protected]/net.minecraftforge.fml.loading.FMLServiceProvider.beginScanning(FMLServiceProvider.java:86)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.TransformationServiceDecorator.runScan(TransformationServiceDecorator.java:112)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.TransformationServicesHandler.lambda$runScanningTransformationServices$8(TransformationServicesHandler.java:100)
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
    at java.base/java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1779)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
    at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
    at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
    at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622)
    at java.base/java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.TransformationServicesHandler.runScanningTransformationServices(TransformationServicesHandler.java:102)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:55)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:88)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:78)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)
    at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141)

 

The Mod worked fine 5sec before with 47.0.1...

how to fix this?

hey did you manage to fix this, i'm having the same issue.
fyi: running the client with `gradlew runClient` does not crashes the game

 

Same issue here, its been driving me crazy. Been trying to update my mod to 1.20.1, even creating a blank project has this issue. Using VSCode. @samjviana's recommendation allows to run successfully now.