How to display contacts fields using fieldSets in lightning components

How to use fieldSets in lightning components

trigger ProcessStage on Stage__c (after insert) {

Database.executeBatch(new BatchProcessStage(trigger.newMap.keySet()),200);
}

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public class ProcessStaging{
public static void handleafterInsert(List<Stage__c> listStage){
Map<String… Read more

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this error comes

Sir I have already already created  custom domain.But here I don’t know how to create  Expense and Camping Item custom object with the following fields

Name (use the standard name field)
Quantity: Number(18, 0) – Required
Price: Currency(16, 2) – Required
Packed: Checkbox(default: unchecked)

Setting Up Your Org
As part of our challenges for this module, you’ll build a camping list application. You need to do a few more tasks before passing this challenge and continuing.

Add a custom domain with My Domain. You probably already have done this.
Create an Expense custom object to work with the examples. You probably already have done… Read more