Second object of each pair must be non-nil

Question

Iam working on app and when i debug my code it is showing the following error.

-(IBAction)addSelected:(id)sender
{

    NSString* emptyStr = @\"\";

    NSDictio         


        

Answer 1

 NSDictionary* traits = [NSDictionary dictionaryWithObjectsAndKeys:
        self.walletName.text,       @"alias",
        self.abc.text,     @"abc",
        self.field.text,     @"field",
        @"name",                @"Type", nil];

The problem is form @"name,".