i need help.

[NivFied]

Minecraft Logs

[20:22:30] [main/INFO]: Loading Minecraft 1.20 with Fabric Loader 0.15.6
[20:22:30] [ForkJoinPool-1-worker-2/WARN]: Mod magna uses the version ${version} which isn't compatible with Loader's extended semantic version format (Could not parse version number component '${version}'!), SemVer is recommended for reliably evaluating dependencies and prioritizing newer version
[20:22:31] [main/WARN]: Mod resolution failed
[20:22:31] [main/INFO]: Immediate reason: [HARD_DEP indrev 1.16.5-BETA {depends libgui @ [*]}, HARD_DEP_INCOMPATIBLE_PRESELECTED libgui 8.1.1+1.20.1 {depends minecraft @ [=1.20.1]}, ROOT_FORCELOAD_SINGLE indrev 1.16.5-BETA]
[20:22:31] [main/INFO]: Reason: [HARD_DEP libgui 8.1.1+1.20.1 {depends minecraft @ [=1.20.1]}, HARD_DEP jankson 6.0.0+j1.2.3 {depends minecraft @ [>=1.20.1]}]
[20:22:31] [main/INFO]: Fix: add [], remove [], replace [[libgui 8.1.1+1.20.1] -> add:libgui 1 ([(-?,?)])]
[20:22:31] [main/ERROR]: Incompatible mods found!
net.fabricmc.loader.impl.FormattedException: Some of your mods are incompatible with the game or each other!
A potential solution has been determined, this may resolve your problem:
	 - Replace mod 'LibGui' (libgui) 8.1.1+1.20.1 with any version that is compatible with:
		 - minecraft 1.20
More details:
	 - Mod 'LibGui' (libgui) 8.1.1+1.20.1 requires version 1.20.1 of 'Minecraft' (minecraft), but only the wrong version is present: 1.20!
	 - Mod 'Jankson' (jankson) 6.0.0+j1.2.3 requires version 1.20.1 or later of 'Minecraft' (minecraft), but only the wrong version is present: 1.20!
	at net.fabricmc.loader.impl.FormattedException.ofLocalized(FormattedException.java:51) ~[fabric-loader-0.15.6.jar:?]
	at net.fabricmc.loader.impl.FabricLoaderImpl.load(FabricLoaderImpl.java:195) ~[fabric-loader-0.15.6.jar:?]
	at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:146) ~[fabric-loader-0.15.6.jar:?]
	at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68) ~[fabric-loader-0.15.6.jar:?]
	at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.15.6.jar:?]

Description

i dont have either jankson or libgui on my pc, but

why does it pick it up? im new to this stuff. so please help me.

[NivFied]

my mods list.

[NotRyken]

Industrial Revolution (indrev) includes LibGui, and LibGui includes Jankson, hence why you don't see them in your mod list.
You should update your Minecraft version to 1.20.1.

[NivFied]

ok thank you.