Below code doesn't get the value from the aura:iteration
    <aura:iteration items="{!v.contactList}" var="item">
                <ul class="slds-has-dividers_bottom-space">
                    <li class="slds-item">
                        <lightning:tile label="{!item.Contact__r.Name}">
                        </lightning:tile>
                    </li>
                </ul>
            </aura:iteration>
            
            In Js Helper:- c.set("v.contactList",storedResponse);
            
                    callDetails=[SELECT Name, Contact__r.Name FROM PersonDetails__c ORDER BY CreatedDate desc LIMIT 20 ];
    I want get the contact assoicated information but doesn't get it.