ERROR
VIEW
<form class="col m12" *ngSwitchCase="'articulos'" style="padding-top: 0;">
<ion-item *ngFor="let item of partesCarros;let i = index;" style="padding-left: 0;">
<ion-grid>
<ion-row style="margin: 0;">
<ion-col col-1 style="padding-top: 30px;">
<i class="medium material-icons" id="cam{{i}}" (click)="getCamara(i)" *ngIf="form.id_registro ==''">camera</i>
<i class="medium material-icons" id="cam{{i}}" (click)="getCamara(i)" *ngIf="form.id_registro !=''">image</i>
</ion-col>
<ion-col col-11 style="padding-left: 20px;">
<div class="titleParte">{{item.parte}}</div>
<div class="inputParte">
<input type="number" style="font-size:2.3rem;text-align: center;width: 20%;float: left;margin: 0;" name="cantidad_ingreso" [(ngModel)]="registroPartes[i].cantidad_ingreso" name="cantidad_ingreso" placeholder="N°">
<select style="display: block;border-radius: 5px;width: 80%;" [(ngModel)]="registroPartes[i].estado_parte_ingreso" name="estado_parte_ingreso">
<option value="">--Estado--</option>
<option value="B">Bueno</option>
<option value="R">Regular</option>
<option value="M">Malo</option>
</select>
<input type="text" style="font-size:1.4rem;width: 100%;float:left;margin:0;" placeholder="Observaciones" name="observacion_ingreso" [(ngModel)]="registroPartes[i].observacion_ingreso">
</div>
</ion-col>
</ion-row>
</ion-grid>
</ion-item>