Could not resolve dependency: net.minecraftforge:forge:1.20.1:userdev

Hi, im having problem with error: Could not resolve dependency: net.minecraftforge:forge:1.20.1:userdev

im new in modding, but i tried everything, and it is still not working. all versions are correct etc.

build gradle:

plugins {
    id 'eclipse'
    id 'idea'
    id 'maven-publish'
    id 'net.minecraftforge.gradle' version '[6.0,6.2)'
    id 'org.parchmentmc.librarian.forgegradle' version '1.+'
}

version = mod_version
group = mod_group_id

base {
    archivesName = mod_id
}

// Mojang ships Java 17 to end users in 1.18+, so your mod should target Java 17.
java.toolchain.languageVersion = JavaLanguageVersion.of(17)

println "Java: ${System.getProperty 'java.version'}, JVM: ${System.getProperty 'java.vm.version'} (${System.getProperty 'java.vendor'}), Arch: ${System.getProperty 'os.arch'}"
minecraft {
    // See more information here: https://github.com/MinecraftForge/MCPConfig/blob/master/Mojang.md
    // Additional setup is needed to use their mappings: https://parchmentmc.org/docs/getting-started

    mappings channel: mapping_channel, version: mapping_version
    
    copyIdeResources = true
    
    runs {
        // applies to all the run configs below
        configureEach {
            workingDirectory project.file('run')
            property 'forge.logging.markers', 'REGISTRIES'
            // Please read: https://stackoverflow.com/questions/2031163/when-to-use-the-different-log-levels
            property 'forge.logging.console.level', 'debug'

            mods {
                "${mod_id}" {
                    source sourceSets.main
                }
            }
        }

        client {
            // Comma-separated list of namespaces to load gametests from. Empty = all namespaces.
            property 'forge.enabledGameTestNamespaces', mod_id
        }

        server {
            property 'forge.enabledGameTestNamespaces', mod_id
            args '--nogui'
        }
        
        gameTestServer {
            property 'forge.enabledGameTestNamespaces', mod_id
        }

        data {
            workingDirectory project.file('run-data')
            
            args '--mod', mod_id, '--all', '--output', file('src/generated/resources/'), '--existing', file('src/main/resources/')
        }
    }
}

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

repositories {
}

dependencies {
    minecraft "net.minecraftforge:forge:1.20.1"
}
tasks.named('processResources', ProcessResources).configure {
    var replaceProperties = [
            minecraft_version: minecraft_version, minecraft_version_range: minecraft_version_range,
            forge_version: forge_version, forge_version_range: forge_version_range,
            loader_version_range: loader_version_range,
            mod_id: mod_id, mod_name: mod_name, mod_license: mod_license, mod_version: mod_version,
            mod_authors: mod_authors, mod_description: mod_description,
    ]
    inputs.properties replaceProperties

    filesMatching(['META-INF/mods.toml', 'pack.mcmeta']) {
        expand replaceProperties + [project: project]
    }
}
// Example for how to get properties into the manifest for reading at runtime.
tasks.named('jar', Jar).configure {
    manifest {
        attributes([
                'Specification-Title'     : mod_id,
                'Specification-Vendor'    : mod_authors,
                'Specification-Version'   : '1', // We are version 1 of ourselves
                'Implementation-Title'    : project.name,
                'Implementation-Version'  : project.jar.archiveVersion,
                'Implementation-Vendor'   : mod_authors,
                'Implementation-Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
        ])
    }
    // This is the preferred method to reobfuscate your jar file
    finalizedBy 'reobfJar'
}

publishing {
    publications {
        register('mavenJava', MavenPublication) {
            artifact jar
        }
    }
    repositories {
        maven {
            url "file://${project.projectDir}/mcmodsrepo"
        }
    }
}
tasks.withType(JavaCompile).configureEach {
    options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
}

please help me out