Can any one solve my below Problem?

When i change a pick list value this error is coming

Apex Class:
public with sharing class CreateWorkOrderRecord
{
    /**
   * Create a new Work Order Record
   *
   * @param WorkOrder Work Order Work Order record to be inserted
   *
   */
    @AuraEnabled
    public static String createRecord(WorkOrder workorder)
    {
        try
        {
            System.debug('CreateWorkOrderRecord::createRecord::workorder'+workorder);

            if(workorder!= null)
                insert workorder;
        }
        catch (Exception ex)
        {
           ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error,string.valueof(ex)));
             return null;
        }
        return null;
    }
     @AuraEnabled
     public static List <String> getselectOptions(sObject objObject, string fld)
     {
          List <String> allOpts = new list <String>();
          Schema.sObjectType objType = objObject.getSObjectType();  // Get the object type of the SObject.
          Schema.DescribeSObjectResult objDescribe = objType.getDescribe();  // Describe the SObject using its object type.
          Map<String, Schema.SObjectField> fieldMap = objDescribe.fields.getMap();  // Get a map of fields for the SObject
          List <Schema.PicklistEntry> values = fieldMap.get(fld).getDescribe().getPickListValues();  // Get the list of picklist values for this field.

          for(Schema.PicklistEntry a: values)
           allOpts.add(a.getValue());  // Add these values to the selectoption list.

          allOpts.sort();
          return allOpts;
     }

}

Component:
<aura:component controller="CreateWorkOrderRecord"
implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes"
access="global" >


<ltng:require styles="/resource/bootstrap1/css/bootstrap.min.css"
scripts="/resource/bootstrap1/js/jquery.js,/resource/bootstrap/js/bootstrap.min.js"/>


<aura:attribute name="selectedLookUpRecord" type="sObject" default="{}"/>
<aura:attribute name="selectedLookUpRecord1" type="sObject" default="{}"/>
<aura:attribute name="selectedLookUpRecord2" type="sObject" default="{}"/>
<aura:attribute name="number" type="integer"/>
<aura:attribute name="myText" type="String"/>

<aura:attribute name="workorder" type="WorkOrder" default="{'sobjectType': 'WorkOrder',
'Account__c': '',
'Contact__c': '',
'Opportunity__c': '',
'Priority': '',
'StartDate': '',
'Status': '',
    'Number_of_Weeks__c': '',
'Visit_Frequency__c': '',
}"/><br/>
   <div>
<table>
<tr>
<td>
<h2 style="font-weight:bold;font-size:12px;margin-left:5%">New Work Order Edit</h2>
<h1 style="font-weight:bold;font-size:18px;margin-left:5%">New Work Order</h1>
</td>
</tr>
</table>
</div><br/>
<center>
   <div class="col-md-4 text-center">
       <lightning:button variant="brand" label="Save" onclick="{!c.create}"/>
</div>
</center><br/>
<div class="slds-box" style="background:rgb(0, 161, 223);font-weight:bold;font-size:15pt;">
<p>WorkOrder Information</p>
</div>

<div class="slds-grid slds-gutters">
<div class="slds-col" style="width:500px;">
<table class="slds-table slds-table--bordered slds-table--cell-buffer">
<thead>
        <tr>
<td width="45%">
<table>
<tr>
   <td><c:customLookup objectAPIName="account" IconName="standard:account" label="Account" selectedRecord="{!v.selectedLookUpRecord}"/></td>
</tr>
<tr>
   <td><c:customLookup objectAPIName="contact" IconName="standard:contact" label="Contact" selectedRecord="{!v.selectedLookUpRecord1}"/></td>
</tr>
<tr>
   <td><c:customLookup objectAPIName="opportunity" IconName="standard:opportunity" label="Opportunity" selectedRecord="{!v.selectedLookUpRecord2}"/></td>
</tr>

<div class="form-group">
<tr>
<td>
<p class="title">Priority</p>
<ui:inputSelect aura:id="InputSelectSingle" change="{!c.onSingleSelectChange}" value="{!v.workorder.Priority}">
<ui:inputSelectOption text="Low"/>
<ui:inputSelectOption text="Medium"/>
<ui:inputSelectOption text="High"/>
<ui:inputSelectOption text="Critical"/>
</ui:inputSelect>
</td>
</tr>
</div>

</table>
</td>
<td width="10%"></td>
<td width="45%">
<table>
<tr>
<td>
<label>StartDate</label>
   <ui:inputDate displayDatePicker="true" value="{!v.workorder.StartDate}"/>
        </td>
</tr>
<div class="form-group">
<tr>
<td>
<p class="title">Status</p>
<ui:inputSelect aura:id="InputSelectSingle" change="{!c.onSingleSelectChange}" value="{!v.workorder.Status}">
<ui:inputSelectOption text="New"/>
<ui:inputSelectOption text="In Progress"/>
<ui:inputSelectOption text="On Hold"/>
<ui:inputSelectOption text="Completed"/>
<ui:inputSelectOption text="Closed"/>
<ui:inputSelectOption text="Cannot Complete"/>
<ui:inputSelectOption text="Canceled"/>
</ui:inputSelect>
   </td>
</tr>
</div>
<tr>
<td>
<p class="title">Number of Visits</p>
<ui:inputNumber value="{!v.workorder.Number_of_Weeks__c}"/>
                   </td>
</tr>
<div class="form-group">
<tr>
<td>
<p class="title">Visit Frequency</p>
<ui:inputSelect aura:id="InputSelectSingle" change="{!c.onSingleSelectChange}" value="{!v.workorder.Visit_Frequency__c}">
<ui:inputSelectOption text="None"/>
<ui:inputSelectOption text="Daily"/>
<ui:inputSelectOption text="Weekly"/>
<ui:inputSelectOption text="Monthly"/>
<ui:inputSelectOption text="Custom Schedule"/>
</ui:inputSelect>
   </td>
</tr>
</div>

</table>
</td>

</tr>
</thead>
</table>
<br/>
<center>
           <div class="col-md-4 text-center">
               <lightning:button variant="brand" label="Save" onclick="{!c.create}"/>
           </div>
           </center>
<br/>
</div>

</div>
</aura:component>
Controller:
({
create : function(component, event, helper) {
console.log('Create record');

//getting the workorder information
var workorder = component.get("v.workorder");
workorder.Account__c = null;
workorder.Contact__c = null;
workorder.Opportunity__c = null;

/***************Validation
if($A.util.isEmpty(workorder.Opportunity__c) || $A.util.isUndefined(workorder.Opportunity__c)){
alert('Account Name is Required');
return;
}*************************************************/
if(component.get("v.selectedLookUpRecord").Id != undefined){
workorder.Account__c = component.get("v.selectedLookUpRecord").Id;
}
if(component.get("v.selectedLookUpRecord1").Id != undefined){
workorder.Contact__c = component.get("v.selectedLookUpRecord1").Id;
}
if(component.get("v.selectedLookUpRecord2").Id != undefined){
workorder.Opportunity__c = component.get("v.selectedLookUpRecord2").Id;
}

//Calling the Apex Function
var action = component.get("c.createRecord");

//Setting the Apex Parameter
action.setParams({
workorder : workorder
});

//Setting the Callback
action.setCallback(this,function(a){
//get the response state
var state = a.getState();

//check if result is successfull
if(state == "SUCCESS"){
//Reset Form
var newWorkorder = {'sobjectType': 'WorkOrder',
'Account__c': '',
'Contact__c': '',
'Opportunity__c': '',
'Priority': '',
'StartDate': '',
'Status': '',
'Number_of_Weeks__c': '',
'Visit_Frequency__c': '',
};
//resetting the Values in the form
component.set("v.workorder",newWorkorder);
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(action);

},

   onSingleSelectChange: function(cmp) {
var selectCmp = cmp.find("InputSelectSingle");
var resultCmp = cmp.find("singleResult");
resultCmp.set("v.value", selectCmp.get("v.value"));
   },
   onChange: function(cmp) {
       var dynamicCmp = cmp.find("InputSelectDynamic");
       var resultCmp = cmp.find("dynamicResult");
       resultCmp.set("v.value", dynamicCmp.get("v.value"));
   }
})

March 9, 2018
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Best Answer chosen by Raghavendra M 13

sfdcMonkey.com
Hi update your onSingleSelectChange method with folloing code:
onSingleSelectChange: function(cmp,event,helper) { var selectCmpValue = event.getSource().get("v.value"); alert(selectCmpValue); },
by this way you can get current picklsit value
Thanks
http://sfdcmonkey.com

March 9, 2018
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JAYABALAJI TKM 1
Hi Raghavendra M 13,

Please check this below line.... there is no aura id 'singleResult' in component.

var resultCmp = cmp.find("singleResult");

If this is help for you make it Best Ans

Thanks
Jayabalaji

March 9, 2018
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