I can not export my unity project on ios platform,Unity export ios i need help

Hello everyone! I have some problems with export IOS When i build on ios platform unity send error - cannot build player while editor is importing assets or compiling scripts.

Assets/Notifs.cs(4,27): error CS0234: The type or namespace name 'Android' does not exist in the namespace 'Unity.Notifications' (are you missing an assembly reference?) Error building Player because scripts had compiler errors Build completed with a result of 'Failed' UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at /Users/builduser/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:187) UnityEditor.BuildPlayerWindow+BuildMethodException: 2 errors at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00269] in /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindowBuildMethods.cs:191 at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindowBuildMethods.cs:95 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at /Users/builduser/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:187)

Help me please,I have some problems with export IOS - unity ios cannot build player while editor is importing assets or compiling scripts.