I am having a crash with the Skyfactory one mod pack, it works fine the first time you play but after that it breaks. 

I can repair the mod pack and then it works again but breaks again the second time it is opened.

 

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 11/7/22 11:53 PM
Description: Initializing game

com.electronwill.nightconfig.core.io.WritingException: An I/O error occured
    at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:222) ~[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.WriteAsyncFileConfig.load(WriteAsyncFileConfig.java:138) ~[core-3.6.3.jar:?] {}
    at com.electronwill.nightconfig.core.file.SimpleCommentedFileConfig.load(SimpleCommentedFileConfig.java:38) ~[core-3.6.3.jar:?] {}
    at net.dark_roleplay.globaldataandresourcepacks.config.PackConfig.loadConfigs(PackConfig.java:22) ~[?:1.10.2] {re:classloading}
    at net.dark_roleplay.globaldataandresourcepacks.config.PackConfig.getRequiredResourceacks(PackConfig.java:43) ~[?:1.10.2] {re:classloading}
    at net.dark_roleplay.globaldataandresourcepacks.GlobalDataAndResourcepacks.getRepositorySource(GlobalDataAndResourcepacks.java:25) ~[?:1.10.2] {re:mixin,re:classloading}
    at net.minecraft.client.Minecraft.modify$zfp000$addClientPackFinder(Minecraft.java:2504) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:mixin:APP:globaldataandresourcepacks.mixins.json:ClientPackFinderMixin,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:379) [?:?] {re:mixin,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:mixin:APP:globaldataandresourcepacks.mixins.json:ClientPackFinderMixin,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:149) [?:?] {re:classloading,pl:runtimedistcleaner:A}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
    at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {re:computing_frames}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.5-36.2.28.jar:36.2] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$495/1899640261.call(Unknown Source) [forge-1.16.5-36.2.28.jar:36.2] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.1.3.jar:?] {}
Caused by: java.nio.file.NoSuchFileException: .\config\global_data_and_resourcepacks.toml
    at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:79) ~[?:1.8.0_51] {}
    at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97) ~[?:1.8.0_51] {}
    at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102) ~[?:1.8.0_51] {}
    at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:230) ~[?:1.8.0_51] {}
    at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434) ~[?:1.8.0_51] {}
    at java.nio.file.Files.newOutputStream(Files.java:216) ~[?:1.8.0_51] {}
    at java.nio.file.Files.copy(Files.java:3016) ~[?:1.8.0_51] {}
    at com.electronwill.nightconfig.core.file.FileNotFoundAction.lambda$copyData$3(FileNotFoundAction.java:51) ~[core-3.6.3.jar:?] {}
    at com.electronwill.nightconfig.core.file.FileNotFoundAction$$Lambda$136/1297836716.run(Unknown Source) ~[?:?] {}
    at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:215) ~[core-3.6.3.jar:?] {}
    ... 20 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
    at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:222) ~[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.WriteAsyncFileConfig.load(WriteAsyncFileConfig.java:138) ~[core-3.6.3.jar:?] {}
    at com.electronwill.nightconfig.core.file.SimpleCommentedFileConfig.load(SimpleCommentedFileConfig.java:38) ~[core-3.6.3.jar:?] {}
    at net.dark_roleplay.globaldataandresourcepacks.config.PackConfig.loadConfigs(PackConfig.java:22) ~[?:1.10.2] {re:classloading}
    at net.dark_roleplay.globaldataandresourcepacks.config.PackConfig.getRequiredResourceacks(PackConfig.java:43) ~[?:1.10.2] {re:classloading}
    at net.dark_roleplay.globaldataandresourcepacks.GlobalDataAndResourcepacks.getRepositorySource(GlobalDataAndResourcepacks.java:25) ~[?:1.10.2] {re:mixin,re:classloading}
    at net.minecraft.client.Minecraft.modify$zfp000$addClientPackFinder(Minecraft.java:2504) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:mixin:APP:globaldataandresourcepacks.mixins.json:ClientPackFinderMixin,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:379) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:topography:minecraftloadworld,pl:mixin:APP:globaldataandresourcepacks.mixins.json:ClientPackFinderMixin,pl:mixin:A,pl:runtimedistcleaner:A}
-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.main.Main.main(Main.java:149) [?:?] {re:classloading,pl:runtimedistcleaner:A}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
    at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {re:computing_frames}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.5-36.2.28.jar:36.2] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$495/1899640261.call(Unknown Source) [forge-1.16.5-36.2.28.jar:36.2] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.1.3.jar:?] {}

-- System Details --
Details:
    Minecraft Version: 1.16.5
    Minecraft Version ID: 1.16.5
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_51, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 352700544 bytes (336 MB) / 1772617728 bytes (1690 MB) up to 3817865216 bytes (3641 MB)
    CPUs: 8
    JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4096m -Xms256m
    Launched Version: forge-36.2.28
    Backend library: LWJGL version 3.2.2 build 10
    Backend API: NO CONTEXT
    GL Caps: 
    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'forge'
    Type: Client (map_client.txt)
    CPU: <unknown>

The config file probably has a lock on it which can occur if some other program is reading or writing to the file in a non-blocking fashion. You can try to close all instances of the config being opened, or you can try to delete all the config files in the `config` folder. If it still breaks, it could be that some config default provided by one of your mods is illegal and causing the parser to fail. In that case, you'll need to remove mods one by one or test in patches until your find the erroring mod.