When I click "submit", Action failed: c:Lead$controller$doInit [helper.getAllRecords is not a function]

My Code For Lead
<aura:component controller="LeadRecord"
            access="global"    implements="force:lightningQuickActionWithoutHeader,force:hasRecordId">
    
    
    <!-- Include Static Resource-->
    <ltng:require styles="/resource/bootstrap/css/bootstrap.min.css"
                  scripts="/resource/bootstrap/js/jquery.js,/resource/bootstrap/js/bootstrap.min.js"/>
    
    <!-- Define Attribute-->
    <aura:attribute name="LeadRec" type="Lead" default="{'sobjectType': 'Lead',
                                                     'FirstName': '',
                                                     'LastName': '',
                                                     'Email': '',
                                                     'Title': '',                            
                                                     'phone': ''
                                                     }"/>
    
    <!-- Display a header with details about the account -->
    <div class="slds-page-header" role="banner">
        <p class="slds-text-heading_label">{!v.Lead.Name}</p>
        <h1 class="slds-page-header__title slds-m-right_small
                   slds-truncate slds-align-left">Create New Lead Data</h1>
    </div>
    
    <div class="slds-form-element">
        <label class="slds-form-element__label" for="form-element-03">
            <abbr class="slds-required" title="required">* </abbr>Frist Name</label>
        <div class="slds-form-element__control">
            <input  aura:id="FirstName"    type="text" id="form-element-03"  value="{!v.LeadRec.FirstName}"  required="" class="slds-input" />
        </div>
    </div>
    <div class="slds-form-element">
        <label class="slds-form-element__label" for="form-element-03">
            <abbr class="slds-required" title="required">* </abbr>Last Name</label>
        <div class="slds-form-element__control">
            <input  aura:id="LastName"         type="text" id="form-element-03"  value="{!v.LeadRec.LastName}" required="" class="slds-input" />
        </div>
    </div>
    
    <div class="slds-form-element">
        <label class="slds-form-element__label" for="form-element-03">
            <abbr class="slds-required"   title="required">* </abbr>Company</label>
        <div class="slds-form-element__control">
            <input aura:id="company"  type="text" id="form-element-03"  value="{!v.LeadRec.Company}"  required="" class="slds-input" />
        </div>
    </div>
    
    <div class="slds-form-element">
        <label class="slds-form-element__label" for="form-element-03">
            <abbr class="slds-required" > </abbr>Title</label>
        <div class="slds-form-element__control">
            <input aura:id="Title"  type="text" id="form-element-03"  value="{!v.LeadRec.Title}"  required="" class="slds-input" />
        </div>
    </div>
    
    <aura:handler name="init" action="{!c.doInit}" value="{!this}" />

    
    <div class="slds-form-element">
        <label class="slds-form-element__label" for="form-element-03">
            <abbr class="slds-required" > </abbr>Email </label>
        <div class="slds-form-element__control">
            <input aura:id="Email"  type="text" id="form-element-03"  value="{!v.LeadRec.Email}"  required="" class="slds-input" />
        </div>
    </div>   
    <div class="slds-form-element">
        <label class="slds-form-element__label" for="form-element-03">
            <abbr class="slds-required" > </abbr>phone </label>
        <div class="slds-form-element__control">
            <input aura:id="phone" type="text" id="form-element-03"  value="{!v.LeadRec.phone}"  required="" class="slds-input" />
        </div>
    </div>   
    
    <div class="col-md-4 text-center" >
        
        <lightning:button variant="brand" label="Submit" onclick="{!c.createLeadInfo}"/>
    </div>
</aura:component>

LeadRecordApex:
public with sharing class LeadRecord {
@AuraEnabled
    public static list<Lead> getRecords(){
        return [select id, FirstName,LastName,Company,phone,Email,Title from Lead];
    }  
    
    
    
    
    @AuraEnabled
    public static Lead createRecord (Lead  LeadRec){
      upsert LeadRec;
        return LeadRec;
}
}

LeadControllerCode:
({
    doInit:function(component,event,helper){
        helper.getAllRecords(component);
    },
    
    
    
    createLeadInfo : function(component, event, helper) {
        console.log('Create record');
        var saveLeadAction=component.get("c.LeadRec");
       
        
        //Validation
        if($A.util.isEmpty(LeadRec.FirstName) || $A.util.isUndefined(LeadRec.FirstName)){
            // alert('First Name is Required');
            return;
        }            
        if($A.util.isEmpty(LeadRec.LastName) || $A.util.isUndefined(LeadRec.LastName)){
            // alert('Last Name is Required');
            return;
        }
        if($A.util.isEmpty(LeadRec.Email) || $A.util.isUndefined(LeadRec.Email)){
            // alert('Email is Required');
            return;
        }
        if($A.util.isEmpty(LeadRec.Title) || $A.util.isUndefined(LeadRec.Title)){
            // alert('Email is Required');
            return;
        }
        
        
        
        if($A.util.isEmpty(LeadRec.Company) || $A.util.isUndefined(LeadRec.Company)){
            
            return;
        }
        //Calling the Apex Function
        var saveLeadAction = component.set("c.LeadRec");
        
        //Setting the Apex Parameter
        saveLeadAction.setParams({
            "Lead":component.get("v.LeadRec")
        });
        
        //Setting the Callback
        saveLeadAction.setCallback(this,function(a){
            //get the response state
            var state = a.getState();
            
            //check if result is successfull
            if(state == "SUCCESS"){
                //Reset Form
                var newCandidate = {'sobjectType': 'Lead',
                                    'FirstName': '',
                                    'LastName': '',
                                    'Company': '',
                                    'Title': '',
                                    'Phone': '',
                                    'Email': ''
                                   };
                //resetting the Values in the form
                component.set("v.LeadRec",newCandidate);
                alert('Record is Created Successfully');
            } else if(state == "ERROR"){
                alert('Error in calling server side action');
            }
        });
        
        //adds the server-side action to the queue        
        $A.enqueueAction(saveLeadAction);
        
    }
})

LeadApp Code:
<aura:application extends="force:slds" >
  <lightning:layout>
        <lightning:layoutItem padding="around-large">
            <h1 class="slds-text-heading_large">Lead Information</h1>
        </lightning:layoutItem>
    </lightning:layout>
    
    <aura:dependency resource="c:Lead" />
    <c:Lead />
</aura:application>