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By ChampionAsh5357 · Posted
1.12.2 is no longer supported on this forum. Please update to a later version. LTS is 1.15.2, 1.14.4 is in a grace period until 1.16.x has a recommended build. -
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So whenever I try installing any version of forge, I save it to my desktop then try opening it. All tutorials I watch have an option to "run client" or something similar. Whenever I click on it, it only says I am able to extract (photo is attached). I'm not too good with technology or anything so I don't really know what to do. -
Well, too bad. 1.12.2 is not supported on the forum. Nobody on the forum will help you with 1.12.2 forge. Sorry *shrugs* -
By frankiecav · Posted
Howdy, all. I've been working on a custom, 4x4 crafting table in 1.12.2. The code seems to be alright, but I keep getting a NullPointerException when I try to open it. Here's the error: [20:43:23] [main/FATAL]: Error executing task java.util.concurrent.ExecutionException: java.lang.NullPointerException at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_231] at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_231] at net.minecraft.util.Util.runTask(Util.java:54) [Util.class:?] at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1161) [Minecraft.class:?] at net.minecraft.client.Minecraft.run(Minecraft.java:436) [Minecraft.class:?] at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231] at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?] at GradleStart.main(GradleStart.java:26) [start/:?] Caused by: java.lang.NullPointerException at com.mineundermatter.survivalessentials.gui.crynyx_crafting_table.ContainerCrynyxCraftingTable.updateMatrix(ContainerCrynyxCraftingTable.java:69) ~[ContainerCrynyxCraftingTable.class:?] at com.mineundermatter.survivalessentials.gui.crynyx_crafting_table.ContainerCrynyxCraftingTable.<init>(ContainerCrynyxCraftingTable.java:41) ~[ContainerCrynyxCraftingTable.class:?] at com.mineundermatter.survivalessentials.gui.crynyx_crafting_table.GuiCrynyxCraftingTable.<init>(GuiCrynyxCraftingTable.java:18) ~[GuiCrynyxCraftingTable.class:?] at com.mineundermatter.survivalessentials.gui.GuiHandler.getClientGuiElement(GuiHandler.java:74) ~[GuiHandler.class:?] at net.minecraftforge.fml.common.network.NetworkRegistry.getLocalGuiContainer(NetworkRegistry.java:277) ~[NetworkRegistry.class:?] at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:110) ~[FMLNetworkHandler.class:?] at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2776) ~[EntityPlayer.class:?] at net.minecraftforge.fml.common.network.internal.OpenGuiHandler.process(OpenGuiHandler.java:50) ~[OpenGuiHandler.class:?] at net.minecraftforge.fml.common.network.internal.OpenGuiHandler.lambda$channelRead0$0(OpenGuiHandler.java:43) ~[OpenGuiHandler.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_231] at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_231] at net.minecraft.util.Util.runTask(Util.java:53) ~[Util.class:?] ... 15 more Here's the Github for my project: https://github.com/frankcav/SurvivalEssentials-1.12.2 Here's the block class: https://github.com/frankcav/SurvivalEssentials-1.12.2/blob/master/src/main/java/com/mineundermatter/survivalessentials/block/BlockCrynyxCraftingTable.java The tileentity class: https://github.com/frankcav/SurvivalEssentials-1.12.2/blob/master/src/main/java/com/mineundermatter/survivalessentials/tileentity/TileEntityCrynyxCraftingTable.java The GUI class: https://github.com/frankcav/SurvivalEssentials-1.12.2/blob/master/src/main/java/com/mineundermatter/survivalessentials/gui/crynyx_crafting_table/GuiCrynyxCraftingTable.java The container class: https://github.com/frankcav/SurvivalEssentials-1.12.2/blob/master/src/main/java/com/mineundermatter/survivalessentials/gui/crynyx_crafting_table/ContainerCrynyxCraftingTable.java GuiHandler class: https://github.com/frankcav/SurvivalEssentials-1.12.2/blob/master/src/main/java/com/mineundermatter/survivalessentials/gui/GuiHandler.java The first error is in my updateMatrix function in the container class. If I comment out the call to updateMatrix in the constructor, I'm able to open the table but trying to leave it or put in an item crashes the game. I'm not sure what other information I can give, so please ask questions... I'd appreciate any help. I've made a custom duel furnace, as well as custom regular furnace, but I can't seem to solve this problem.
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