Error: Zooming is not enabled! in IOS with Ionic

hello,
zoom functionality + slide and slidebox works well in my IonicV1 App,
but in my Chrome’s console I have this error when I tested in Ionic serve IOS .

Error: Zooming is not enabled! VM44210 ionic.bundle.js:26799
at child.zoomTo (VM44210 ionic.bundle.js:6020)
at VM44210 ionic.bundle.js:60684
at processQueue (VM44210 ionic.bundle.js:29132)
at VM44210 ionic.bundle.js:29148
at completeOutstandingRequest (VM44210 ionic.bundle.js:19199)
at VM44210 ionic.bundle.js:19475

    <ion-content>    
        <ion-slide-box on-slide-changed="slideChanged($index)" delegate-handle='slideHandleZoom' active-slide="activeSlideZoom" on-double-tap="autoZoom(activeSlideZoom)" on-swipe-up="closeModal(activeSlideZoom)" on-swipe-down="closeModal(activeSlideZoom)">   
            <ion-slide ng-repeat="image in images">
                <ion-scroll direction="xy" scrollbar-x="false" scrollbar-y="false"
      zooming="true" min-zoom="{{zoomMin}}" style="width: 100%; height: 100%"
      delegate-handle="slideHandleZoom{{$index}}" on-scroll="updateSlideStatus($index)" on-release="updateSlideStatus($index)" overflow-scroll="false">
                    <div style="width:100%;height:{{screenSize.height}}px;background-size: contain;background-repeat: no-repeat;background-position: center, center;background-image: url( {{image.image}} )" ></div>
                </ion-scroll>
            </ion-slide>
        </ion-slide-box>
    </ion-content>