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Help with datapacks unable to load


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I am getting the error "Errors in currently selected datapcks prevented the world from loading". I will include the log -> https://pastebin.com/dZ750pV7

I couldn't include the whole log, but the crash at the bottom is there. Tell me if mmore info is needed. The modpack I am using is better minecraft plus but with quite a few new mods and updated ones, so it is almost a custom one. Any help ?  Which mod/pack/stuff do i have to remove/add/update? I am not using optifine. 

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[15:31:40] [Render thread/WARN]: Failed to load datapacks, can't proceed with server load
java.util.concurrent.ExecutionException: com.google.gson.JsonParseException: Error loading registry data: Not a json array: {"processors":[{"rules":[{"output_state":{"Name":"minecraft:mossy_cobblestone"},"input_predicate":

-- snip --

Looks like an issue with one of your mods or datapacks having invalid datapack definitions.

Most likely stoneholm since that is mentioned?

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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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