I open Unicorn battle example in 2018.2.5f1, it show these error
App - support-v4:25.3.1
UnityEngine.Debug:LogWarning(Object)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:addSupportLibraryDepenency(Object, String, String)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:setupDependencies()
Facebook.Unity.Editor.AndroidSupportLibraryResolver:.cctor()
UnityEditor.EditorAssemblies:ProcessInitializeOnLoadAttributes()
App - appcompat-v7:25.3.1
UnityEngine.Debug:LogWarning(Object)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:addSupportLibraryDepenency(Object, String, String)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:setupDependencies()
Facebook.Unity.Editor.AndroidSupportLibraryResolver:.cctor()
App - cardview-v7:25.3.1
UnityEngine.Debug:LogWarning(Object)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:addSupportLibraryDepenency(Object, String, String)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:setupDependencies()
Facebook.Unity.Editor.AndroidSupportLibraryResolver:.cctor()
App - customtabs:25.3.1
UnityEngine.Debug:LogWarning(Object)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:addSupportLibraryDepenency(Object, String, String)
Facebook.Unity.Editor.AndroidSupportLibraryResolver:setupDependencies()
Facebook.Unity.Editor.AndroidSupportLibraryResolver:.cctor()
UnityEditor.EditorAssemblies:ProcessInitializeOnLoadAttributes()
error CS1704: An assembly with the same name `Facebook.Unity.Android' has already been imported. Consider removing one of the references or sign the assembly
Assets/FacebookSDK/Plugins/Android/Facebook.Unity.Android.dll (Location of the symbol related to previous error)
Assets/FacebookSDK/Plugins/iOS/Facebook.Unity.Android.dll (Location of the symbol related to previous error)
error CS1704: An assembly with the same name `Facebook.Unity.IOS' has already been imported. Consider removing one of the references or sign the assembly
Assets/FacebookSDK/Plugins/Android/Facebook.Unity.IOS.dll (Location of the symbol related to previous error)
error CS1704: An assembly with the same name `Facebook.Unity.Android' has already been imported. Consider removing one of the references or sign the assembly
Assets/FacebookSDK/Plugins/Android/Facebook.Unity.Android.dll (Location of the symbol related to previous error)
Assets/FacebookSDK/Plugins/iOS/Facebook.Unity.Android.dll (Location of the symbol related to previous error)
error CS1704: An assembly with the same name `Facebook.Unity.IOS' has already been imported. Consider removing one of the references or sign the assembly
Assets/FacebookSDK/Plugins/Android/Facebook.Unity.IOS.dll (Location of the symbol related to previous error)
error CS1704: An assembly with the same name `Facebook.Unity.Android' has already been imported. Consider removing one of the references or sign the assembly
Assets/FacebookSDK/Plugins/Android/Facebook.Unity.Android.dll (Location of the symbol related to previous error)
Assets/FacebookSDK/Plugins/iOS/Facebook.Unity.Android.dll (Location of the symbol related to previous error)
error CS1704: An assembly with the same name `Facebook.Unity.IOS' has already been imported. Consider removing one of the references or sign the assembly
Assets/FacebookSDK/Plugins/Android/Facebook.Unity.IOS.dll (Location of the symbol related to previous error)
How can I solve these error?