Gradle can't find project fabric-loom-0.8_SNAPSHOT

When i try to build i get this error:
Plugin [id: 'fabric-loom', version: '0.7-SNAPSHOT'] was not found in any of the following sources:

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    This is my build.gradle:

       plugins {
          id 'fabric-loom' version '0.7-SNAPSHOT'
          id 'maven-publish'
      sourceCompatibility = JavaVersion.VERSION_1_8
      targetCompatibility = JavaVersion.VERSION_1_8
      archivesBaseName = project.archives_base_name
      version = project.mod_version
      group = project.maven_group
      dependencies {
          //to change the versions see the file
          minecraft "com.mojang:minecraft:${project.minecraft_version}"
          mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
          modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
          // Fabric API. This is technically optional, but you probably want it anyway.
          modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
          compile 'com.mojang:brigadier:(1.0.17)'
          // PSA: Some older mods, compiled on Loom 0.2.1, might have outdated Maven POMs.
          // You may need to force-disable transitiveness on them.
      processResources {
 "version", project.version
          from(sourceSets.main.resources.srcDirs) {
              include "fabric.mod.json"
              expand "version": project.version
          from(sourceSets.main.resources.srcDirs) {
              exclude "fabric.mod.json"
      // ensure that the encoding is set to UTF-8, no matter what the system default is
      // this fixes some edge cases with special characters not displaying correctly
      // see
      tasks.withType(JavaCompile) {
          options.encoding = "UTF-8"
      // Loom will automatically attach sourcesJar to a RemapSourcesJar task and to the "build" task
      // if it is present.
      // If you remove this task, sources will not be generated.
      task sourcesJar(type: Jar, dependsOn: classes) {
          classifier = "sources"
          from sourceSets.main.allSource
      jar {
          from "LICENSE"
      // configure the maven publication
      publishing {
          publications {
              mavenJava(MavenPublication) {
                  // add all the jars that should be included when publishing to maven
                  artifact(remapJar) {
                      builtBy remapJar
                  artifact(sourcesJar) {
                      builtBy remapSourcesJar
          // select the repositories you want to publish to
          repositories {
              // uncomment to publish to the local maven
              // mavenLocal()

This is the Sponge forums, not the fabric forums, you may get better help from the fabric community.

But from what I can gather loom requires you to provide the repo in the repositories as its not in your local maven collection