Config files break themselves

[alx-alexpark]

I started my server and got an error that a config file had invalid syntax. I have run the server before without this error, and I have never modified any configs. Furthermore, this not only happened to one config file, but multiple. I corrected the error manually at first, but the server kept crashing, but with a different file that had errors.

Temporary fix: copying fresh configs from unmodified server pack, or restoring a .bak.toml (backup).

Environment: Debian 12 running on Proxmox VE

Logs

Crash log

[24Sep2023 09:08:30.690] [main/FATAL] [net.minecraft.server.Main/]: Failed to start the minecraft server
net.minecraftforge.fml.config.ConfigFileTypeHandler$ConfigLoadingException: Failed loading config file repurposed_structures-forge/mineshafts.toml of type COMMON for modid repurposed_structures
	at net.minecraftforge.fml.config.ConfigFileTypeHandler.lambda$reader$1(ConfigFileTypeHandler.java:61) ~[forge:?]
	at net.minecraftforge.fml.config.ConfigTracker.openConfig(ConfigTracker.java:104) ~[forge:?]
	at net.minecraftforge.fml.config.ConfigTracker.lambda$loadConfigs$1(ConfigTracker.java:83) ~[forge:?]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[?:1.8.0_312]
	at java.util.Collections$SynchronizedCollection.forEach(Collections.java:2064) ~[?:1.8.0_312]
	at net.minecraftforge.fml.config.ConfigTracker.loadConfigs(ConfigTracker.java:83) ~[forge:?]
	at net.minecraftforge.fml.ModLoader.loadMods(ModLoader.java:209) ~[forge:?]
	at net.minecraftforge.fml.server.ServerModLoader.load(ServerModLoader.java:45) ~[forge:?]
	at net.minecraft.server.Main.main(Main.java:95) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_312]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_312]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_312]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_312]
	at net.minecraftforge.fml.loading.FMLServerLaunchProvider.lambda$launchService$0(FMLServerLaunchProvider.java:51) ~[forge-1.16.5-36.2.20.jar:36.2]
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?]
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?]
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?]
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?]
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?]
	at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63) [forge-1.16.5-36.2.20.jar:?]
	at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60) [forge-1.16.5-36.2.20.jar:?]
	at net.minecraftforge.server.ServerMain.main(ServerMain.java:57) [forge-1.16.5-36.2.20.jar:?]
Caused by: com.electronwill.nightconfig.core.io.ParsingException: Invalid character '
' after key [------------------------------------------------------------------------]
	at com.electronwill.nightconfig.toml.TableParser.parseDottedKey(TableParser.java:152) ~[toml-3.6.3.jar:?]
	at com.electronwill.nightconfig.toml.TableParser.parseNormal(TableParser.java:55) ~[toml-3.6.3.jar:?]
	at com.electronwill.nightconfig.toml.TableParser.parseNormal(TableParser.java:101) ~[toml-3.6.3.jar:?]
	at com.electronwill.nightconfig.toml.TomlParser.parse(TomlParser.java:88) ~[toml-3.6.3.jar:?]
	at com.electronwill.nightconfig.toml.TomlParser.parse(TomlParser.java:37) ~[toml-3.6.3.jar:?]
	at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:113) ~[core-3.6.3.jar:?]
	at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:219) ~[core-3.6.3.jar:?]
	at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:202) ~[core-3.6.3.jar:?]
	at com.electronwill.nightconfig.core.file.WriteSyncFileConfig.load(WriteSyncFileConfig.java:73) ~[core-3.6.3.jar:?]
	at com.electronwill.nightconfig.core.file.AutosaveCommentedFileConfig.load(AutosaveCommentedFileConfig.java:85) ~[core-3.6.3.jar:?]
	at net.minecraftforge.fml.config.ConfigFileTypeHandler.lambda$reader$1(ConfigFileTypeHandler.java:57) ~[forge:?]
	... 21 more

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