Cannot read Property 'Name"' of Undefined at Object.Val [as updateDirectives]

Question

I’m doing an Asp.Net Core Web API with Angular 7 CRUD and I’m having trouble in the final phase, just when I enter my angular localhost and open the console, I come across the following log (Note, already looked in SQL Studio Managment and the Column is created with that name)

PaymentDetailComponent.html:11 ERROR TypeError: Cannot read property 'CardOwner' of undefined
    at Object.eval [as updateDirectives] (PaymentDetailComponent.html:11)
    at Object.debugUpdateDirectives [as updateDirectives] (core.js:23911)
    at checkAndUpdateView (core.js:23307)
    at callViewAction (core.js:23548)
    at execComponentViewsAction (core.js:23490)
    at checkAndUpdateView (core.js:23313)
    at callViewAction (core.js:23548)
    at execComponentViewsAction (core.js:23490)
    at checkAndUpdateView (core.js:23313)
    at callViewAction (core.js:23548)
View_PaymentDetailComponent_0 @ PaymentDetailComponent.html:11

Follow the codes: if necessary I edit the question by adding what more you ask.

public class PaymentDetails
    {   
        //Propriedades do PaymentDetails
        //Aparentemente usamos isso para criar um banco
        //Usando alguns comandon NuGet Package Manager (Comand Line)
        //Inicializaremos o banco no SQLServer Express
        [Key]
        public int PMId { get; set; }
        [Required]
        [Column(TypeName ="nvarchar(100)")]
        public string CardOwner { get; set; }
        [Required]
        [Column(TypeName = "nvarchar(16)")]
        public string CardNumber { get; set; }
        [Required]
        [Column(TypeName = "nvarchar(5)")]
        public string ExpirationDate { get; set; }
        [Required]
        [Column(TypeName = "nvarchar(3)")]
        public string CVV { get; set;}
    }

export class PaymentDetail {

    PMId: number;
    CardOwner: string;
    CardNumber: string;
    ExpirationDate: string;
    CVV: string;

}

<input name="CardOwner" #CardOwner="ngModel" [(ngModel)]="service.formData.CardOwner" 
    type="text" class="form-control" placeholder="CardOwner" required maxlength="100">

If I do this to take the .formData. out of the code, it works considerately. Some functions fail

<input name="CardOwner" #CardOwner="ngModel" [(ngModel)]="service.CardOwner" 
   type="text" class="form-control" placeholder="CardOwner" required maxlength="100">