Exit Code 1 or 0?

[HarryHarrison]

So my problem is that I got exit code 1. The weird things is my launcher said exit code 0 and I don't know if that means anything.

Here my output log. 
10:06:15.761
Preparing to launch minecraft client for 1.16.3-forge-34.1.25
10:06:16.789
Checking installations.
10:06:16.791
Minecraft client 1.16.3-forge-34.1.25 is ready to start.
10:06:16.791
Starting!
10:06:17.760
Version does not support log configuration, will assume one plaintext entry per line
10:06:19.052
2020-10-25 10:06:19,049 main WARN Advanced terminal features are not available in this environment
10:06:19.270
[32m[10:06:19] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--username, HarryHarrison, --version, 1.16.3-forge-34.1.25, --gameDir, C:\Users\Harrison\AppData\Roaming\.minecraft, --assetsDir, C:\Users\Harrison\AppData\Roaming\.minecraft\assets, --assetIndex, 1.16, --uuid, 209daec9225e4841a644f4cbb478c77f, --accessToken, ????????, --userType, mojang, --versionType, release, --launchTarget, fmlclient, --fml.forgeVersion, 34.1.25, --fml.mcVersion, 1.16.3, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20200911.084530]
10:06:19.277
[m[32m[10:06:19] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 7.0.1+78+master.e9771d8 starting: java version 1.8.0_51 by Oracle Corporation
10:06:19.527
[m[32m[10:06:19] [main/INFO] [op.OptiFineTransformationService/]: OptiFineTransformationService.onLoad
10:06:19.530
[m[32m[10:06:19] [main/INFO] [op.OptiFineTransformationService/]: OptiFine ZIP file: C:\Users\Harrison\AppData\Roaming\.minecraft\mods\OptiFine_1.16.3_HD_U_G3_MOD.jar
10:06:19.718
[m[32m[10:06:19] [main/INFO] [ne.mi.fm.lo.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
10:06:19.822
[m[32m[10:06:19] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.2 Source=file:/C:/Users/Harrison/AppData/Roaming/.minecraft/libraries/org/spongepowered/mixin/0.8.2/mixin-0.8.2.jar Service=ModLauncher Env=CLIENT
10:06:19.835
[m[32m[10:06:19] [main/INFO] [op.OptiFineTransformationService/]: OptiFineTransformationService.initialize
10:06:19.909
[mException in thread "main" [32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: java.lang.RuntimeException: Failed to load FML config from C:\Users\Harrison\AppData\Roaming\.minecraft\config\fml.toml
10:06:19.909
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraftforge.fml.loading.FMLConfig.loadFrom(FMLConfig.java:64)
10:06:19.911
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraftforge.fml.loading.FMLConfig.load(FMLConfig.java:77)
10:06:19.911
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraftforge.fml.loading.FMLServiceProvider.initialize(FMLServiceProvider.java:81)
10:06:19.911
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.TransformationServiceDecorator.onInitialize(TransformationServiceDecorator.java:68)
10:06:19.911
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.TransformationServicesHandler.lambda$initialiseTransformationServices$7(TransformationServicesHandler.java:107)
10:06:19.912
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.TransformationServicesHandler$$Lambda$88/1970436060.accept(Unknown Source)
10:06:19.916
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.util.HashMap$Values.forEach(HashMap.java:972)
10:06:19.917
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.TransformationServicesHandler.initialiseTransformationServices(TransformationServicesHandler.java:107)
10:06:19.917
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:59)
10:06:19.917
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.Launcher.run(Launcher.java:75)
10:06:19.917
[m[32m[10:06:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

[Danebi]

Try to delete this file: C:\Users\Harrison\AppData\Roaming\.minecraft\config\fml.toml.

[HarryHarrison]

Ok, that fix it. Thanks for that help.