Cannot implicitly convert type 'System.Func<System.Collections.Generic.IList<BootstrapBlazor.Components.TreeViewItem<BootstrapBlazor.Server.Data.TreeFoo>>, System.Threading.Tasks.Task>' to 'Microsoft.AspNetCore.Components.RenderFragment'

Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type

Cannot implicitly convert type 'object' to 'System.Collections.Generic.List<BootstrapBlazor.Components.TreeViewItem<BootstrapBlazor.Server.Data.TreeFoo>>'. An explicit conversion exists (are you missing a cast?)

Cannot implicitly convert type 'System.Collections.Generic.IList<BootstrapBlazor.Components.CheckboxState>' to 'System.Collections.Generic.List<BootstrapBlazor.Components.CheckboxState>'. An explicit conversion exists (are you missing a cast?)

Cannot implicitly convert type 'System.Func<string?, System.Threading.Tasks.Task<System.Collections.Generic.IList<BootstrapBlazor.Components.TreeViewItem<BootstrapBlazor.Server.Data.TreeFoo>>?>>' to 'Microsoft.AspNetCore.Components.RenderFragment<string>'

Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type