Use Schema Builder to create a custom field for the Property object
DreamHouse brokers often visit properties with their clients. They want to see on the property record where the property is located. Use Schema Builder to add a street address field to the Property object.
Field data type: Text Area
Field label: Street Address
Always require a value in this field in order to save a record: Selected


Result: Challenge Not yet complete... here's what's wrong: 
The field 'Street_Address__c' either does not exists on the Property__c object or it is not of type textarea.


I have completed all the steps listed but still getting this same result. Any ideas?
 

 Dear Friends,

Can Anyone explain Why this error was showing here ...

trigger ExampleTrigger on Contact (after insert, after delete) {
    if (Trigger.isInsert) {
        Integer recordCount = Trigger.New.size();
        // Call a utility method from another class
        EmailManager.sendMail('Your email address', 'Trailhead Trigger Tutorial', 
                    recordCount + ' contact(s) were inserted.');
    }
    else if (Trigger.isDelete) {
        // Process after delete
    }
}


Error : Variable does not exist: EmailManager


Thanks In Advance ..