Error when run function select-all checkbox

Dear All,

i got error when i click select all.
please help me to fix this problem.

<ion-content padding class="page-shop-cart">
    <span>
        <label>Check All</label>
        <ion-checkbox (click)="checkAll()"></ion-checkbox>
    </span>
<div class="card-list" *ngFor="let takeData of sale">
<span>
        <ion-checkbox [(ngModel)]="takeData.checked" (click)="selectMember(takeData)"></ion-checkbox>
  </span>

.ts

checkAll(){
  this.storage.get('sale').then((val => {
       this.sale = val;
       console.log(this.sale);
  
  for(let i =0; i <= this.sale.length; i++) {
   
    this.sale[i].checked = true;

  }    
 console.log(this.sale);
}
   }));

data json:

error log 1;


error log 2

thank you all