Getting Error at Xamarin.Essentials.Email.ComposeAsync in Xamarin Forms Ios Project

Hi all,
i can't able to send email in ios using xamarin essentials.i am getting the error like
Object reference not set to an instance of an object
at Xamarin.Essentials.Email.GetMailToUri (Xamarin.Essentials.EmailMessage message) [0x000a9] in C:\agent_work\78\s\Xamarin.Essentials\Email\Email.shared.cs:36
at Xamarin.Essentials.Email.ComposeWithUrl (Xamarin.Essentials.EmailMessage message) [0x00006] in C:\agent_work\78\s\Xamarin.Essentials\Email\Email.ios.cs:64
at Xamarin.Essentials.Email.PlatformComposeAsync (Xamarin.Essentials.EmailMessage message) [0x0000e] in C:\agent_work\78\s\Xamarin.Essentials\Email\Email.ios.cs:29
at Xamarin.Essentials.Email.ComposeAsync (Xamarin.Essentials.EmailMessage message) [0x0000d] in C:\agent_work\78\s\Xamarin.Essentials\Email\Email.shared.cs
if any one have idea please let me know
Thanks In Advance