Hi All,

with below code I have completed the challenge thanks!!...When I tried to add this componet to Application and tried to check the UI part..I got below error, Can some one please let me know what the mistake is???

Something has gone wrong. [NoErrorObjectAvailable] Aura.loadComponent(): Failed to initialize application. An internal server error has occurred Error ID: 991118890-131685 (-1741317831) . Please try again.

APP:

<aura:application >
    <c:campingListItem />
</aura:application>


COMPONENT:

<aura:component >

    <aura:attribute name="item" type="Camping_Item__c" required="true"/>
    <ui:outputText value="{!v.item}"/>
    <ui:outputText value="{!v.item.Name}"/>
    <ui:outputCheckbox value="{!v.item.Packed__c}"/>
    <ui:outputCurrency value="{!v.item.Price__c}"/>
    <ui:outputNumber value="{!v.item.Quantity__c}"/>
    
    <ui:button label="packed!" press="{!c.packItem}" > 
    </ui:button>
</aura:component>


CONTROLLER:
({
    packItem: function(component, event, helper) {
        var a = component.get("v.item",true);
       
        a.Packed__c = true;
        component.set("v.item",a);
        var btnClicked = event.getSource();
        btnClicked.set("v.disabled",true);
    }
})


Thanks