build.gradle

plugins {
    id 'org.spongepowered.plugin' version '0.8.1'
    id 'org.jetbrains.kotlin.jvm' version '1.1.3'
    id 'org.jetbrains.kotlin.kapt' version '1.1.3'
    id 'com.github.johnrengelman.shadow' version '1.2.4'
}

group = pluginGroup
version = pluginVersion

//dependencies {
//    compile 'org.spongepowered:spongeapi:7.0.0-SNAPSHOT'
//}

repositories {
    mavenCentral()
    maven {url "https://repo.spongepowered.org/maven/"}
}

configurations {
    compile.extendsFrom shadow
}

dependencies {
    kapt "org.spongpowered:spongeapi:$spongeVersion"
    shadow 'org.jetbrains.kotlin:kotlin-stdlib-jre8'
    shadow 'org.jetbrains.kotlin:kotlin-runtime'
    shadow 'org.jetbrains.kotlin:kotlin-reflect'
}

sponge {
    plugin {
        id = pluginId
        meta {
            authors = ['KingGoesGaming']
        }
    }
}

error

Could not find org.spongpowered:spongeapi:6.0.0.
Searched in the following locations:
    file:/home/kgg_dev/.m2/repository/org/spongpowered/spongeapi/6.0.0/spongeapi-6.0.0.pom
    file:/home/kgg_dev/.m2/repository/org/spongpowered/spongeapi/6.0.0/spongeapi-6.0.0.jar
    https://repo1.maven.org/maven2/org/spongpowered/spongeapi/6.0.0/spongeapi-6.0.0.pom
    https://repo1.maven.org/maven2/org/spongpowered/spongeapi/6.0.0/spongeapi-6.0.0.jar
    https://repo.spongepowered.org/maven/org/spongpowered/spongeapi/6.0.0/spongeapi-6.0.0.pom
    https://repo.spongepowered.org/maven/org/spongpowered/spongeapi/6.0.0/spongeapi-6.0.0.jar
Required by:
    project :