我正在Intellij上为Minecraft 1.12开发一个Forge mod。像很多人一样，我在IDE上运行游戏时遇到了资产未加载的问题。到目前为止，我尝试过的所有解决方案都失败了：
很多人都建议添加下面的代码到build.gradle中，但这会引发一个错误，因为classesDir已被弃用;将其替换为classesDirs会引发另一个错误。

sourceSets {
    main { output.resourcesDir = output.classesDir }
}

我在 * 构建、执行、部署〉构建工具〉Gradle* 中将“构建并运行使用”设置从“Gradle”更改为“Intellij IDEA”，但我也没有修复该问题。
此外，当我尝试构建jar时，我得到了以下错误：我也不知道这里出了什么问题...
下面是我正在使用的build.gradle脚本，由Intellij生成：

buildscript {
    repositories {
        // These repositories are only for Gradle plugins, put any other repositories in the repository block further below
        maven { url = 'https://maven.minecraftforge.net' }
        mavenCentral()
    }
    dependencies {
        classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '5.1.+', changing: true
    }
}

apply plugin: 'net.minecraftforge.gradle'

group = 'net.darmo_creations.mccode'
version = '1.0'

java {
    archivesBaseName = 'mccode'
    toolchain.languageVersion = JavaLanguageVersion.of(8)
}

minecraft {
    // The mappings can be changed at any time and must be in the following format.
    // Channel:   Version:
    // snapshot   YYYYMMDD   Snapshot are built nightly.
    // stable     #          Stables are built at the discretion of the MCP team.
    // official   MCVersion  Official field/method names from Mojang mapping files
    //
    // You must be aware of the Mojang license when using the 'official' mappings.
    // See more information here: https://github.com/MinecraftForge/MCPConfig/blob/master/Mojang.md
    //
    // Use non-default mappings at your own risk. They may not always work.
    // Simply re-run your setup task after changing the mappings to update your workspace.
    mappings channel: 'stable', version: '39-1.12'

    // accessTransformer = file('src/main/resources/META-INF/accesstransformer.cfg')

    // Default run configurations.
    // These can be tweaked, removed, or duplicated as needed.
    runs {
        client {
            workingDirectory project.file('run')

            // Recommended logging data for a userdev environment
            // The markers can be added/removed as needed separated by commas.
            // "SCAN": For mods scan.
            // "REGISTRIES": For firing of registry events.
            // "REGISTRYDUMP": For getting the contents of all registries.
            property 'forge.logging.markers', 'REGISTRIES'

            // Recommended logging level for the console
            // You can set various levels here.
            // Please read: https://stackoverflow.com/questions/2031163/when-to-use-the-different-log-levels
            property 'forge.logging.console.level', 'debug'

            mods {
                mc_code {
                    source sourceSets.main
                }
            }
        }

        server {
            workingDirectory project.file('run')

            // Recommended logging data for a userdev environment
            // The markers can be added/removed as needed separated by commas.
            // "SCAN": For mods scan.
            // "REGISTRIES": For firing of registry events.
            // "REGISTRYDUMP": For getting the contents of all registries.
            property 'forge.logging.markers', 'REGISTRIES'

            // Recommended logging level for the console
            // You can set various levels here.
            // Please read: https://stackoverflow.com/questions/2031163/when-to-use-the-different-log-levels
            property 'forge.logging.console.level', 'debug'

            mods {
                mc_code {
                    source sourceSets.main
                }
            }
        }
    }
}

// Include resources generated by data generators.
sourceSets.main.resources { srcDir 'src/generated/resources' }

repositories {
    // Put repositories for dependencies here
    // ForgeGradle automatically adds the Forge maven and Maven Central for you

    // If you have mod jar dependencies in ./libs, you can declare them as a repository like so:
    // flatDir {
    //     dir 'libs'
    // }
}

dependencies {
    // Specify the version of Minecraft to use. If this is any group other than 'net.minecraft' it is assumed
    // that the dep is a ForgeGradle 'patcher' dependency, and its patches will be applied.
    // The userdev artifact is a special name and will get all sorts of transformations applied to it.
    minecraft 'net.minecraftforge:forge:1.12.2-14.23.5.2854'

    // Real mod deobf dependency examples - these get remapped to your current mappings
    // compileOnly fg.deobf("mezz.jei:jei-${mc_version}:${jei_version}:api") // Adds JEI API as a compile dependency
    // runtimeOnly fg.deobf("mezz.jei:jei-${mc_version}:${jei_version}") // Adds the full JEI mod as a runtime dependency
    // implementation fg.deobf("com.tterrag.registrate:Registrate:MC${mc_version}-${registrate_version}") // Adds registrate as a dependency
    implementation "org.antlr:antlr4:4.9.3"

    // Examples using mod jars from ./libs
    // implementation fg.deobf("blank:coolmod-${mc_version}:${coolmod_version}")

    // For more info...
    // http://www.gradle.org/docs/current/userguide/artifact_dependencies_tutorial.html
    // http://www.gradle.org/docs/current/userguide/dependency_management.html
}

// Example for how to get properties into the manifest for reading at runtime.
jar {
    manifest {
        attributes([
                "Specification-Title"     : "mc_code",
                "Specification-Vendor"    : "Darmo",
                "Specification-Version"   : "1", // We are version 1 of ourselves
                "Implementation-Title"    : project.name,
                "Implementation-Version"  : project.jar.archiveVersion,
                "Implementation-Vendor"   : "Darmo",
                "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
        ])
    }
}

jar.finalizedBy('reobfJar')

我做错了什么？我不明白为什么Intellij不能自己正确地设置Forge项目...