Gradle "could not resolve all dependecies"

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1

I was opening a project last month and I came across this error in gradle when I was generating a jar … (I had already formatted the pc a few times)

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In IntelliJ, build seems fine…

apply plugin: 'java'
apply plugin: 'application'

version '1.0.0'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
    compile group: 'org.fusesource', name: 'sigar', version: '1.6.4'
    compile 'com.fasterxml.jackson.core:jackson-core:2.7.1'
    compile 'com.fasterxml.jackson.core:jackson-databind:2.7.1-1'
    testCompile group: 'com.sun.net.httpserver', name: 'http', version: '20070405'
    compile 'org.apache.httpcomponents:httpclient:4.5.5'
}
task uniqueJar(type: Jar) {
    manifest {
        attributes 'Implementation-Title': project.name,
                'Implementation-Version': version,
                'Main-Class': 'br.com.fulltime.infra.client.connection.ClientHTTP'
    }

    baseName = project.name
    doFirst {
        from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
    }
    exclude 'META-INF/*.RSA', 'META-INF/*.SF','META-INF/*.DSA'
    with jar
}

Any ideas? I had this error once, and it was because my JDK was installed wrong … now I removed the JDK and installed again (with purge and talz) and nothing …