Sequence contains more than one member error when using binding with multiple constructor parameters

Using MVC5

with version ninject

3.2 I noticed that it is ninject

throwing this error

Sequence contains more than one element

      

        
        
        
      

    

on resolution / injection of dependency

I have an email service that uses sendgrid

to send emails from an application MVC 5

running inAzure WebSites

if i register a service like in ninjectwebcommon it works

var sgUserName = ConfigurationManager.AppSettings["SG_UserName"];
var sgPassword = ConfigurationManager.AppSettings["SG_Password"];

//Register email service
kernel.Bind<IEmailService>()
    .To<EmailService>()
    .WithConstructorArgument("userName", sgUserName)
    .WithConstructorArgument("password", sgPassword);

      

        
        
        
      

    

Below is the code

Sequence contains more than one element

      

        
        
        
      

    

on resolution / injection of dependency. Not sure if this is a known issue or not.

var sgUserName = ConfigurationManager.AppSettings["SG_UserName"];
var sgPassword = ConfigurationManager.AppSettings["SG_Password"];

//Register email service
kernel.Bind<IEmailService>()
    .To<EmailService>()
    .WithConstructorArgument(sgUserName)
    .WithConstructorArgument(sgPassword);