The 'PackageIconUrl'/'iconUrl' element is deprecated. Consider using the 'PackageIcon'/'icon' element instead. Learn more at https://aka.ms/deprecateIconUrl

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Nullability of reference types in type of parameter 'attachments' of 'Task MailkitEmailSender.SendHtmlEmailAsync(IEnumerable<string> toAddress, string subject, string body, IEnumerable<IEmailAttachment> attachments = null)' doesn't match implicitly implemented member 'Task IEmailSender.SendHtmlEmailAsync(IEnumerable<string> toAddress, string subject, string body, IEnumerable<IEmailAttachment>? attachments = null)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'attachments' of 'Task MailkitEmailSender.SendHtmlEmailAsync(string toAddress, string subject, string body, IEnumerable<IEmailAttachment> attachments = null)' doesn't match implicitly implemented member 'Task IEmailSender.SendHtmlEmailAsync(string toAddress, string subject, string body, IEnumerable<IEmailAttachment>? attachments = null)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'attachments' of 'Task MailkitEmailSender.SendTextEmailAsync(IEnumerable<string> toAddress, string subject, string body, IEnumerable<IEmailAttachment> attachments = null)' doesn't match implicitly implemented member 'Task IEmailSender.SendTextEmailAsync(IEnumerable<string> toAddress, string subject, string body, IEnumerable<IEmailAttachment>? attachments = null)' (possibly because of nullability attributes).