I am getting the same error all the time after I changed my build.gradle

I am getting the same error everytime I tried to run client after I changed my gradle

Error : Unable to make field private static final java.util.Map java.lang.ProcessEnvironment.theCaseInsensitiveEnvironment accessible: module java.base does not "opens java.lang" to unnamed module @48140564

build.gradle :

buildscript {
    repositories {
        maven { url = 'https://maven.minecraftforge.net/' }
        mavenCentral()
    }
    dependencies {
        classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '3.+', changing: true
    }
}
apply plugin: 'net.minecraftforge.gradle'
apply plugin: 'eclipse'
apply plugin: 'maven-publish'

version = '1.0'
group = 'com.yourname.modid' // http://maven.apache.org/guides/mini/guide-naming-conventions.html
archivesBaseName = 'modid'

sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8' // Need this here so eclipse task generates correctly.
println('Java: ' + System.getProperty('java.version') + ' JVM: ' + System.getProperty('java.vm.version') + '(' + System.getProperty('java.vendor') + ') Arch: ' + System.getProperty('os.arch'))

repositories {
    maven { url 'https://dl.cloudsmith.io/public/geckolib3/geckolib/maven/' }
}

minecraft {
    mappings channel: 'snapshot', version: '20200514-1.15.1'
    runs {
        client {
            workingDirectory project.file('run')

            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'

            property 'forge.logging.console.level', 'debug'

            mods {
                examplemod {
                    source sourceSets.main
                }
            }
        }

        server {
            workingDirectory project.file('run')

            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'

            property 'forge.logging.console.level', 'debug'

            mods {
                examplemod {
                    source sourceSets.main
                }
            }
        }

        data {
            workingDirectory project.file('run')

            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'

            property 'forge.logging.console.level', 'debug'

            args '--mod', 'examplemod', '--all', '--output', file('src/generated/resources/')

            mods {
                examplemod {
                    source sourceSets.main
                }
            }
        }
    }
}

dependencies {
    minecraft 'net.minecraftforge:forge:1.15.2-31.2.57'

    compile fg.deobf('software.bernie.geckolib:geckolib-forge-1.15.2:3.0.46')
}

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"
        }
    }
}