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"Error: java.lang.NoClassDefFoundError:vazkii/arl/item/BasicItem" crash upon launching game


Xoooner

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java.lang.ClassNotFoundException: vazkii.arl.item.BasicItem

The error you reported in the title is because you are missing the AutoRegLib mod.

 

But you also have

Quote

[12Sep2022 14:50:32.463] [Render thread/FATAL] [net.minecraftforge.fml.ModLoader/CORE]: Error during pre-loading phase

net.minecraftforge.fml.ModLoadingException: Mod §eadhooks§r requires §6forgeendertech§r §o9.0.0.0 or above§r

§7Currently, §6forgeendertech§r§7 is §o§nnot installed

at net.minecraftforge.fml.ModLoadingException.lambda$fromEarlyException$0(ModLoadingException.java:50) ~[fmlcore-1.18.2-40.1.68.jar%23119!/:?]

 

But I think you have a lot of these kinds of errors:

e.g. trying to run a mod for 1.19 with 1.18

Quote

[12Sep2022 14:50:12.608] [main/ERROR] [net.minecraftforge.fml.loading.LanguageLoadingProvider/LOADING]: Missing language javafml version [41,) wanted by NethersDelight-1.19-3.0.jar, found 40

And this large list of missing mods, the reference to "forge" in this list is the mod that wants forge for minecraft 1.19:

Quote

[12Sep2022 14:50:12.614] [main/ERROR] [net.minecraftforge.fml.loading.ModSorter/LOADING]: Missing mandatory dependencies: forgeendertech, yungsapi, yungsapi, terrablender, cucumber, expandability, geckolib3, forgeendertech, codechickenlib, curios, yungsapi, curios, sophisticatedcore, placebo, autoreglib, architectury, feature_nbt_deadlock_be_gone, geckolib3, mantle, supermartijn642configlib, supermartijn642corelib, cyclopscore, patchouli, paucal, insanelib, yungsapi, cyclopscore, balm, forge, patchouli, majruszlib, placebo, cucumber, curios, yungsapi

 

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

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yes and when you do, check to see if these new mods have other dependencies by looking at their mod page on curseforge.

Mod authors usually list their dependencies in prominent text because they get tired of answering the same questions about why their mod won't work. 🙂 
 

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

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