【Forge模组开发】【Sreen类空指针问题】this.minecraft is null

Description: Rendering screen

java.lang.NullPointerException: Cannot invoke "net.minecraft.client.Minecraft.getTextureAtlas(net.minecraft.resources.ResourceLocation)" because "this.minecraft" is null

        at net.minecraft.client.gui.screens.inventory.AbstractContainerScreen.renderSlot(AbstractContainerScreen.java:243) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}

        at net.minecraft.client.gui.screens.inventory.AbstractContainerScreen.render(AbstractContainerScreen.java:121) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}

        at net.minecraft.client.gui.screens.inventory.EffectRenderingInventoryScreen.render(EffectRenderingInventoryScreen.java:35) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}

        at net.minecraft.client.gui.screens.Screen.renderWithTooltip(Screen.java:109) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

        at net.minecraftforge.client.ForgeHooksClient.drawScreenInternal(ForgeHooksClient.java:427) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading}

        at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:420) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading}

        at net.minecraft.client.renderer.GameRenderer.render(GameRenderer.java:986) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

        at net.minecraft.client.Minecraft.runTick(Minecraft.java:1172) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

        at net.minecraft.client.Minecraft.run(Minecraft.java:723) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

        at net.minecraft.client.main.Main.main(Main.java:218) ~[forge-1.20.1-47.2.20_mapped_parchment_2023.09.03-1.20.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}

        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}

        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}

        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}

        at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}

        at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.2.20.jar:?] {}

        at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.2.20.jar:?] {}

        at net.minecraftforge.fml.loading.targets.ForgeClientUserdevLaunchHandler.devService(ForgeClientUserdevLaunchHandler.java:19) ~[fmlloader-1.20.1-47.2.20.jar:?] {}

        at net.minecraftforge.fml.loading.targets.CommonDevLaunchHandler.lambda$makeService$7(CommonDevLaunchHandler.java:135) ~[fmlloader-1.20.1-47.2.20.jar:?] {}

        at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}

        at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}

        

ModEvent.MinecraftInstanceGeter 是你自己实现的类吗？
一般来说，不需要存放 Minecraft 实例，需要调用时直接Minecraft.getInstance()就行，必要时做空检查。