Configure appium on Android Studio

Issues/Bugs
1

I am trying to use appium java client for my Android UI test. However, I Cannot make it run. Here is my build.gradle and my error message.

apply plugin: 'com.android.application'

android {
compileSdkVersion 26
defaultConfig {
    applicationId "com.example.wpjtest2"
    minSdkVersion 26
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.uiautomator:uiautomator-v18:2.1.3'
androidTestImplementation 'io.appium:java-client:5.0.4'
}

error:

Information:Gradle tasks [:app:assembleDebug, :app:assembleDebugAndroidTest]
Error:java.lang.IllegalAccessException: no such method:     org.springframework.core.io.buffer.DataBufferUtils.lambda$read$0(ReadableByteChannel)ReadableByteChannel/invokeStatic
Error:java.lang.NoClassDefFoundError: org/reactivestreams/Publisher
Error:java.lang.ClassNotFoundException: Class org.reactivestreams.Publisher not found
Error:java.nio.file.DirectoryNotEmptyException: C:\Users\zil\AppData\Local\Temp\lambdas5516872364251960030\org\springframework\core\io
Error:java.lang.IllegalAccessException: no such method: org.springframework.beans.factory.config.YamlMapFactoryBean.lambda$createMap$0(Map,Properties,Map)void/invokeSpecial
Error:java.lang.NoClassDefFoundError: org/yaml/snakeyaml/reader/UnicodeReader
Error:java.lang.ClassNotFoundException: Class org.yaml.snakeyaml.reader.UnicodeReader not found
Error:Execution failed for task     ':app:transformClassesWithDesugarForDebugAndroidTest'.
> com.android.build.api.transform.TransformException: java.lang.RuntimeException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: Error while executing java process with main class com.google.devtools.build.android.desugar.Desugar with arguments {@C:\Users\xxx\project\WPJTest2\app\build\intermediates\tmp\desugar_args221997254795871866}
Information:BUILD FAILED in 15s
Error:java.lang.ClassNotFoundException: Class javax.validation.Validator not found
Information:9 errors
Information:0 warnings
Information:See complete output in console