Complex Solver Error after essentials update today

[matttuck]

---- Quilt Loader: Failed to load ----
Date/Time: 2023/09/14 16:50:42.3162

– Error 1 –

Unhandled solver error involving the following rules:
Rule 1:
Mandatory mod Essential Dependencies (essential-dependencies) v0
Rule 2:
Dependency for {org.quiltmc.loader.impl.plugin.fabric.FabricModOption ‘essential-dependencies’ from /Essential Dependencies.jar} on fabric-language-kotlin versions [>1.10.10+kotlin.1.9.10] (1 valid options, 2 invalid options)
+ {org.quiltmc.loader.impl.plugin.fabric.FabricModOption ‘fabric-language-kotlin’ from /Essential Dependencies.jar!/META-INF/jars/[email protected]+kotlin.1.9.10.jar} {org.quiltmc.loader.impl.plugin.fabric.FabricModOption ‘fabric-language-kotlin’ from /Essential Dependencies.jar!/META-INF/jars/[email protected]+kotlin.1.9.10.jar}
x provided mod ‘fabric-language-kotlin’ from {org.quiltmc.loader.impl.plugin.quilt.QuiltModOption ‘qkl_core’ from /core-2.0.2+kt.1.8.20+flk.1.9.3.jar} {org.quiltmc.loader.impl.plugin.quilt.QuiltModOption ‘qkl_core’ from /core-2.0.2+kt.1.8.20+flk.1.9.3.jar}
x provided mod ‘fabric-language-kotlin’ from {org.quiltmc.loader.impl.plugin.quilt.QuiltModOption ‘qkl_core’ from /quilt-kotlin-libraries-1.0.2+kt.1.8.0+flk.1.9.0(1).jar!/META-INF/jars/quilt-kotlin-libraries-core-1.0.2+kt.1.8.0+flk.1.9.0.jar} {org.quiltmc.loader.impl.plugin.quilt.QuiltModOption ‘qkl_core’ from /quilt-kotlin-libraries-1.0.2+kt.1.8.0+flk.1.9.0(1).jar!/META-INF/jars/quilt-kotlin-libraries-core-1.0.2+kt.1.8.0+flk.1.9.0.jar}
Rule 3:
optional mod ‘fabric-language-kotlin’ (3 sources)
- {org.quiltmc.loader.impl.plugin.quilt.QuiltModOption ‘qkl_core’ from /quilt-kotlin-libraries-1.0.2+kt.1.8.0+flk.1.9.0(1).jar!/META-INF/jars/quilt-kotlin-libraries-core-1.0.2+kt.1.8.0+flk.1.9.0.jar}
- {org.quiltmc.loader.impl.plugin.quilt.QuiltModOption ‘qkl_core’ from /core-2.0.2+kt.1.8.20+flk.1.9.3.jar}
- {org.quiltmc.loader.impl.plugin.fabric.FabricModOption ‘fabric-language-kotlin’ from /Essential Dependencies.jar!/META-INF/jars/[email protected]+kotlin.1.9.10.jar}
Rule 4:
Mandatory mod Quilt Kotlin Libraries: Core (qkl_core) v2.0.2

Getting this error with the new essentials update

[jessicajolt]

I am having the same error.

[SplendidAlakey]

Essential downloads Fabric Language Kotlin, which is not compatible with Quilt Kotlin Libraries. Manually delete either one and it should work.

[matttuck]

deleted one of these, same issue, reinstalled and deleted the other, same error

[SplendidAlakey]

Strange. Which one did you delete? Try removing QKL specifically, since Essential wants FLK.

Is this your own modpack or a public one?

Edit: also make sure it’s this one QKL 2.1.3 + FLK 1.10.10 + Kotlin 1.9.10 - Quilt Kotlin Libraries (QKL) if you are on 1.20.1. Or, if using FLK - Fabric Language Kotlin 1.10.10+kotlin.1.9.10 - Fabric Language Kotlin.