I want to create content node (if dont alredy exist) every time member is saved.

For that I need Umbraco helper to check if node alredy exist and content services to create that content node.

But when i click save I am getting null reference on EnsureUmbracoContext

This is my code:

public class CreateFolders : IUserComposer
{
    public void Compose(Composition composition)
    {
        // Append our component to the collection of Components
        // It will be the last one to be run
        composition.Components().Append<SubscribeToContentServiceSavingComponent>();
    }
    public class SubscribeToContentServiceSavingComponent : IComponent
    {
        // access to the ContentService by injection
        private readonly IContentService _contentService;
        private readonly IUmbracoContextFactory _context;
        public SubscribeToContentServiceSavingComponent(IContentService contentService)
        {
            _contentService = contentService;
        }
        public SubscribeToContentServiceSavingComponent(IUmbracoContextFactory context)
        {
            _context = context;
        }
        // initialize: runs once when Umbraco starts
        public void Initialize()
        {
            MemberService.Saving += MemberService_Saving;
        }
        // terminate: runs once when Umbraco stops
        public void Terminate()
        {
        }
        private void MemberService_Saving(IMemberService sender, SaveEventArgs<IMember> e)
        {
            foreach (IMember member in e.SavedEntities)
            {
                //var cref = _context.EnsureUmbracoContext();
                using (var cref = _context.EnsureUmbracoContext())
                {
                    var cache = cref.UmbracoContext.Content;
                    bool hasExistingFolder = cache.GetById(2198).ChildrenOfType("downloadsFile").Any(x => x.Value("authorPicker") == member);

                    if (!hasExistingFolder)
                    {
                        var createFolder = _contentService.Create(member.Id.ToString(), 2198, "downloadsFile");

                        // Convert member key to udi so we can add member to member picker
                        var memberUdi = Udi.Create(Constants.UdiEntityType.Document, member.Key);
                        createFolder.SetValue("authorPicker", memberUdi);

                        // Save and publish file
                        _contentService.SaveAndPublish(createFolder);
                    }
                }
            }
        }
    }
}