Insta-Crash at Startup... (Failed to read accessWidener) Doesn't even generate a proper crash log.

[23:30:20] [main/INFO]: Loading Minecraft 1.19.4 with Fabric Loader 0.14.19
[23:30:21] [main/INFO]: Loading 66 mods:
- architectury 8.1.79
- cloth-config 10.0.96
-- cloth-basic-math 0.6.1
- fabric-api 0.78.0+1.19.4
|-- fabric-api-base 0.4.23+9ff28bcef4
|-- fabric-api-lookup-api-v1 1.6.24+49abcf7ef4
|-- fabric-biome-api-v1 13.0.6+348a9c64f4
|-- fabric-block-api-v1 1.0.5+e022e5d1f4
|-- fabric-blockrenderlayer-v1 1.1.33+c2e6f674f4
|-- fabric-client-tags-api-v1 1.0.14+1134c5b8f4
|-- fabric-command-api-v1 1.2.26+f71b366ff4
|-- fabric-command-api-v2 2.2.5+e719b857f4
|-- fabric-commands-v0 0.2.43+df3654b3f4
|-- fabric-containers-v0 0.1.53+df3654b3f4
|-- fabric-content-registries-v0 3.5.8+ae0966baf4
|-- fabric-convention-tags-v1 1.4.0+9a7c5daaf4
|-- fabric-crash-report-info-v1 0.2.14+aeb40ebef4
|-- fabric-data-generation-api-v1 11.3.7+5da15ca1f4
|-- fabric-dimensions-v1 2.1.44+7f87f8faf4
|-- fabric-entity-events-v1 1.5.12+e45f7c65f4
|-- fabric-events-interaction-v0 0.4.42+a1ccd7bff4
|-- fabric-events-lifecycle-v0 0.2.51+df3654b3f4
|-- fabric-game-rule-api-v1 1.0.32+a1ccd7bff4
|-- fabric-item-api-v1 2.1.16+09a3510cf4
|-- fabric-item-group-api-v1 3.0.4+043f9acff4
|-- fabric-key-binding-api-v1 1.0.32+c477957ef4
|-- fabric-keybindings-v0 0.2.30+df3654b3f4
|-- fabric-lifecycle-events-v1 2.2.14+5da15ca1f4
|-- fabric-loot-api-v2 1.1.26+75e98211f4
|-- fabric-loot-tables-v1 1.1.30+9e7660c6f4
|-- fabric-message-api-v1 5.1.0+1ee8be40f4
|-- fabric-mining-level-api-v1 2.1.38+49abcf7ef4
|-- fabric-models-v0 0.3.29+11ba9c3bf4
|-- fabric-networking-api-v1 1.3.0+a6f3ccfaf4
|-- fabric-networking-v0 0.3.40+df3654b3f4
|-- fabric-object-builder-api-v1 7.0.2+63b515f4f4
|-- fabric-particles-v1 1.0.22+f1e4495bf4
|-- fabric-recipe-api-v1 1.0.7+a1ccd7bff4
|-- fabric-registry-sync-v0 2.1.3+a383ab97f4
|-- fabric-renderer-api-v1 2.2.4+81e8c576f4
|-- fabric-renderer-indigo 1.1.0+81e8c576f4
|-- fabric-renderer-registries-v1 3.2.37+df3654b3f4
|-- fabric-rendering-data-attachment-v1 0.3.27+afca2f3ef4
|-- fabric-rendering-fluids-v1 3.0.20+f1e4495bf4
|-- fabric-rendering-v0 1.1.40+df3654b3f4
|-- fabric-rendering-v1 2.1.0+8f878217f4
|-- fabric-resource-conditions-api-v1 2.3.0+e6c7d4eef4
|-- fabric-resource-loader-v0 0.11.1+1e1fb126f4
|-- fabric-screen-api-v1 1.0.44+8c25edb4f4
|-- fabric-screen-handler-api-v1 1.3.19+5da15ca1f4
|-- fabric-sound-api-v1 1.0.8+75e98211f4
|-- fabric-transfer-api-v1 3.1.0+d51205dbf4
-- fabric-transitive-access-wideners-v1 3.0.2+63b515f4f4
- fabricloader 0.14.19
- jade 10.0.0
- java 17
- minecraft 1.19.4
- modmenu 6.1.0
|-- fabric-api-base 0.4.23+9ff28bcef4
|-- fabric-key-binding-api-v1 1.0.32+c477957ef4
|-- fabric-lifecycle-events-v1 2.2.14+5da15ca1f4
-- fabric-screen-api-v1 1.0.44+8c25edb4f4
- no-telemetry 1.7.0
- roughlyenoughitems 11.0.597
-- error_notifier 1.0.9
- simplemagnets 1.1.9
- supermartijn642configlib 1.1.6
- supermartijn642corelib 1.1.7
- xaerominimap 23.3.3
- xaeroworldmap 1.29.5
Failed to start Minecraft:
java.lang.RuntimeException: Failed to read accessWidener file from mod simplemagnets
at net.fabricmc.loader.impl.FabricLoaderImpl.loadAccessWideners(FabricLoaderImpl.java:480)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:151)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:234)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:269)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)
Caused by: net.fabricmc.accesswidener.AccessWidenerFormatException: line 1: Namespace (named) does not match current runtime namespace (intermediary)
at net.fabricmc.accesswidener.AccessWidenerReader.error(AccessWidenerReader.java:285)
at net.fabricmc.accesswidener.AccessWidenerReader.read(AccessWidenerReader.java:84)
at net.fabricmc.loader.impl.FabricLoaderImpl.loadAccessWideners(FabricLoaderImpl.java:478)
... 11 more
Exiting with -1
Process exited with code -1 (0xffffffffffffffff).
Please note that usually neither the exit code, nor its description are enough to diagnose issues!
Always upload the entire log and not just the exit code.