Hi ,

I tried to create my first lightning application but i get the folowing error.



Below is my code

Application
<aura:application extends="force:slds" >
    <c:TeacherAppCompo/>
</aura:application>

Component
<aura:component controller='TeacherCreateRecord' >

    <aura:attribute name="client" type="Teacher__c" default="{'sObjectType':'Teacher__c','Name' : '' }" />
    <ui:inputtext label="Enter Teacher Name"   value="{!v.client.Name}" />
    <ui:button label="Submit" press="{!c.createClient}"/>
</aura:component>

Client side contoller
({
    createClient : function(component, event) {
        
        
       //for logs
        console.log("In Client Controller");

        //getting the record info from component to js
        var varClient=component.get("v.client");
       
        //validation to  check of field is empty or not
        if($A.util.isEmpty(varClient.Name) || $A.util.isUndefined(varClient.Name) )
        {
           alert('First name is required');
            //return the value and function will stop
            return;
        }
         
         helper.createRecord(varClient);
    }
})

Helper
({
    createRecord : function() {
         
       
       console.log("In helper");
        
        //calling apex function
        alert('Before action');
        var action = component.get("c.createTeacherRecord");
         
        alert('Before set params function');
        //set the parameters
        action.setParams({
            client : varClient
        });
        
        alert('Before callback function');
        //set callback function
        action.setCallback(this,function(a){
            
            var response=a.getState();
            if(response == "SUCCESS")
            {
                //Reset form and this is optional
                var newrecord= {'sObjectType' : 'Teacher__c','Name':''};
                component.set("v.client",newrecord);
                alert('Record is Created');
            }else if(response == "ERROR")
            {
                alert('Record is not Created');
            }
        });
        //To enqueue all actions and let all happen one by one 
        $A.enqueueAction(action);
    }
    
})

ApexClass
public with sharing class TeacherCreateRecord {
    
    
    @AuraEnabled
    public static void createTeacherRecord(Teacher__c  client)
    {
        try{
            System.debug('Teacher Create Record class'+ client) ;
            if(client != null)
            {
                insert client;
            }
        }
    
       catch(Exception e) 
       {
            System.debug('Inside Apex class') ;   
       }
    }
 }

The object i have used is Teacher__c and i am trying to fetch the name which is a standard field .