Unity - admob - Gradle Failed to fetch dependencies error - unity3d

Question

I m following admob interstitial ad tutorial.I imported plugin.When try to resolve android play services I m getting these error.
Error 1:
Resolution failed
Failed to fetch the following dependencies:
com.google.android.gms:play-services-ads:11.2.2
UnityEngine.Debug:LogError(Object)
Google.Logger:Log(String, LogLevel)
GooglePlayServices.PlayServicesResolver:Log(String, LogLevel)
GooglePlayServices.ResolverVer1_1:LogMissingDependenciesError(List`1)
GooglePlayServices.<DoResolutionUnsafe>c__AnonStorey18:<>m__26(List`1)
GooglePlayServices.<GradleResolution>c__AnonStorey14:<>m__1F(Result)
GooglePlayServices.<GradleResolution>c__AnonStorey15:<>m__28()
GooglePlayServices.PlayServicesResolver:PumpUpdateQueue()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
Error2 :
Gradle failed to fetch dependencies.
Failed to run 'C:\Users\batuhan osma\Documents\dart2d\Temp\PlayServicesResolverGradle\gradlew.bat -b "C:\Users\batuhan osma\Documents\dart2d\Temp\PlayServicesResolverGradle\PlayServicesResolver.scripts.download_artifacts.gradle" --no-daemon "-PANDROID_HOME=C:/Program Files (x86)/Android/android-sdk" "-PTARGET_DIR=C:\Users\batuhan osma\Documents\dart2d\Assets\Plugins\Android" "-PMAVEN_REPOS=https://maven.google.com" "-PPACKAGES_TO_COPY=com.google.android.gms:play-services-ads:11.2.2"'
stdout:
stderr:
Exception in thread "main" java.lang.RuntimeException: Timeout of 120000 reached waiting for exclusive access to file: C:\Users\batuhan osma\.gradle\wrapper\dists\gradle-4.2.1-bin\dajvke9o8kmaxbu0kc5gcgeju\gradle-4.2.1-bin.zip
at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
at org.gradle.wrapper.Install.createDist(Install.java:48)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:107)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
exit code: 1
UnityEngine.Debug:LogError(Object)
Google.Logger:Log(String, LogLevel)
GooglePlayServices.PlayServicesResolver:Log(String, LogLevel)
GooglePlayServices.<GradleResolution>c__AnonStorey14:<>m__1F(Result)
GooglePlayServices.<GradleResolution>c__AnonStorey15:<>m__28()
GooglePlayServices.PlayServicesResolver:PumpUpdateQueue()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()