[1.12.2] Can't get deobfProvided to work

[Nachos Rios]

I started recently using IntelliJ to build my mods, but I am stuck at a problem that I can't seem to be able to fix. I created this account because I tried watching tutorials/searching here, but still having problems.

My build.gradle:

buildscript {
    repositories {
        maven { url = 'https://files.minecraftforge.net/maven' }
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:3.+'
    }
}
        
apply plugin: 'net.minecraftforge.gradle'
// Only edit below this line, the above code adds and enables the necessary things for Forge to be setup.
apply plugin: 'idea' // Note: used to be 'eclipse', I changed it to 'idea'
apply plugin: 'maven-publish'

version = '2.0'
group = 'com.nachos.incraftable'
archivesBaseName = 'incraftable'

sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8' // Need this here so eclipse task generates correctly.

minecraft {
    mappings channel: 'snapshot', version: '20171003-1.12'

    runs {
        client {
            workingDirectory project.file('run')
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
            property 'forge.logging.console.level', 'debug'
        }

        server {
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
            property 'forge.logging.console.level', 'debug'
        }
    }
}

repositories {
}

dependencies {
    minecraft 'net.minecraftforge:forge:1.12.2-14.23.5.2854'
    // deobfProvided "mezz.jei:jei_${mc_version}:${jei_version}:api" // This is the problematic line 
}
// Below this line is completely unchanged
jar {
    manifest {
        attributes([
            "Specification-Title": "examplemod",
            "Specification-Vendor": "examplemodsareus",
            "Specification-Version": "1", // We are version 1 of ourselves
            "Implementation-Title": project.name,
            "Implementation-Version": "${version}",
            "Implementation-Vendor" :"examplemodsareus",
            "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
        ])
    }
}

jar.finalizedBy('reobfJar')

publishing {
    publications {
        mavenJava(MavenPublication) {
            artifact jar
        }
    }
    repositories {
        maven {
            url "file:///${project.projectDir}/mcmodsrepo"
        }
    }
}

I only have 2 classes as of writing, and I didn't add pretty much nothing else different. If you need the two classes, just let me know.

Edit: forgot to put the error, here it is:

A problem occurred evaluating root project 'TopTime'.
> Could not find method deobfProvided() for arguments [mezz.jei:jei_1.12.2:4.16.1.301:api] on object of

Edited August 25, 2020 by Nachos Rios

[Nachos Rios]

Bump