Hi All,
I have created a visual force page to create a pdf in order object. Earlier it was worked fine but now I am facing this error:
"common.apex.runtime.impl.executionexception: sobject row was retrieved via soql without querying the requested field: order.ordernumber"

Here is my controller:
public class OrderPdf {
    public  Order ord{set;get;} 
    public OrderItem ordIt{set;get;}
    public Organization  org{set;get;}
    public  string rec;
    public OrderPdf(apexpages.StandardController sc){ 
        rec=apexpages.currentPage().getparameters().get('id');
  ord = [SELECT ID,AccountId,Customer_PO_Date__c,Customer_PO_Number__c,Delivery_Terms__c,Incoterms_2010_named_place__c,Payment_Terms__c,Port_of_Arrival__c,CurrencyIsoCode,Name,OrderNumber,EffectiveDate,Ship_Via__c,Supplier_Number__c,Account.CIN__c,Account.Email__c,Account.Phone,BillToContact.Email,BillToContact.Phone,TotalAmount,BillToContact.FirstName,BillToContact.LastName,account.name,account.billingcountry,account.billingcity,account.billingstate,account.billingPostalCode,account.billingStreet,account.shippingcountry,account.shippingcity,account.shippingstate,account.shippingPostalCode,
             account.shippingStreet,(select Product2Id,Product2.Name,OrderItemNumber,Product2.Description,Total_Price_Incl_GST__c,Quantity,Delivery_Date__c,HSN_Code__c,CAS_No__c,UOM__c,Description,UnitPrice,TotalPrice from orderItems) from order where id =: rec];  
    }
       public  pagereference SaveFile(){
         PageReference pdf = Page.OrderPDFAttachement;
           pdf.getParameters().put('id',rec);
           pdf.setRedirect(true);
          blob body =Test.isRunningTest() ? Blob.valueOf('UNIT.TEST'):pdf.getContentAsPDF();
          string filename = ' My File Name ';  
          ContentVersion conVer = new ContentVersion();
          conVer.ContentLocation = 'S'; // S specify this document is in SF, use E for external files
          conVer.PathOnClient = 'Attachment.pdf'; // The files name, extension is very important here which will help the file in preview.
          conVer.Title = String.valueOf('SOMU '+ string.valueof(system.today().format())+'.pdf'); // Display name of the files
          conVer.VersionData = body; // converting your binary string to Blog
          insert conVer;
          Id conDoc = [SELECT ContentDocumentId FROM ContentVersion WHERE Id =:conVer.Id].ContentDocumentId;
           ContentDocumentLink cDe = new ContentDocumentLink();
           cDe.ContentDocumentId = conDoc;
           cDe.LinkedEntityId =rec; // you can use objectId,GroupId etc
//cDe.ShareType = 'I'; // Inferred permission, checkout description of ContentDocumentLink object for more details
//cDe.Visibility = 'System Administrator';
           insert cDe;
           pagereference p=new pagereference('/'+rec);
           return p;
    }
    public  pagereference SendFile(){
          PageReference pdf = Page.OrderPdf;
          pdf.getParameters().put('id',rec);
         //  Blob b =pdf.getContentAsPDF();
          Blob b =Test.isRunningTest() ? Blob.valueOf('UNIT.TEST'):pdf.getContentAsPDF();
        ContentVersion conVer = new ContentVersion();
conVer.ContentLocation = 'S'; // S specify this document is in SF, use E for external files
conVer.PathOnClient = 'Attachment.pdf'; // The files name, extension is very important here which will help the file in preview.
conVer.Title = String.valueOf('SOMU '+ string.valueof(system.today().format())+'.pdf'); // Display name of the files
conVer.VersionData = b; // converting your binary string to Blog
insert conVer;
           Id conDoc = [SELECT ContentDocumentId FROM ContentVersion WHERE Id =:conVer.Id].ContentDocumentId;
 //Create ContentDocumentLink
ContentDocumentLink cDe = new ContentDocumentLink();
cDe.ContentDocumentId = conDoc;
cDe.LinkedEntityId =rec; // you can use objectId,GroupId etc
//cDe.ShareType = 'I'; // Inferred permission, checkout description of ContentDocumentLink object for more details
//cDe.Visibility = 'System Administrator';
insert cDe;
        pagereference p=new pagereference('/'+rec); 
        return p;
           }    
}
---------------------------------------------------------------------------------------------
Visualforce page:
<apex:page extensions="OrderPdf" renderas="pdf" standardController="order" applyHtmlTag="false" applyBodyTag="false" showHeader="false">   
     <head>
        <style type="text/css">
            @page{
             size:21cm 29.7cm; 
              @bottom-right{
                content:"Page " counter(page) " of " counter(pages);
            }
            }
            
        </style> 
    <img src="https://somugroup--dev1.sandbox.file.force.com/servlet/servlet.FileDownload?file=0151s000000E4iq" style="background-color:#D3D3D3; width: 90px; height: 50px" align="left" /> <br/> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

    </head>
    <tr>
         <td colspan= "2" align="left">        <br/> <span style="font-size: 14px;"><b>Contact: {!ord.BillToContact.FirstName}{!ord.BillToContact.LastName}</b></span></td> 
       <td style="font-size: 15px;text-align: right" width="5%">&nbsp; <b>Order:{!ord.OrderNumber} </b><br/></td>  
  
            </tr> 
      <table style="width:100%" border="0" cellspacing="0">          
        <tbody>
        <tr>
     <td colspan= "2" align="left">        <br/> <span style="font-size: 14px;"><b>{!ord.account.name}</b></span></td> 
            
            </tr>
            <tr><td >
       <span style="font-size: 15px;">{!ord.account.billingStreet}<br/>{!ord.account.billingcity}<br/>{!ord.account.billingstate}<br/>{!ord.account.billingPostalCode}<br/>{!ord.account.billingcountry}<br/>CIN#: {!ord.Account.CIN__c}<br/>Email: {!ord.Account.Email__c}<br/>Phone: {!ord.Account.Phone}<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><br/>
       </td>
       
       <table style="width:10%" border="1" cellspacing="0" align="right">
           <tr>
           <td style="font-size: 15px;text-align: center"  width="5%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  <b>Type</b><br/></td>
           <td style="font-size: 15px;text-align: center"  width="5%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  <b>Order</b><br/></td>
          <td style="font-size: 15px;text-align: center"  width="5%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  <b>Order Date</b><br/></td>
          <td style="font-size: 15px;text-align: center"  width="5%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  <b>Revision Date</b><br/></td>
           <td style="font-size: 15px;text-align: center"  width="5%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  <b>Buyer</b><br/></td>

           </tr>
            <apex:repeat value="{!Order}" var="ort">
            <tr>
                
                <td style="font-size: 12px;" align="left" >Standard Purchase Order </td>
                <td style="font-size: 12px;" align="left"> {!ort.OrderNumber}</td>
                <td style="font-size: 12px;" align="left">
                <apex:outputText value="{0,date,dd'-'MM'-'yyyy}">
                  <apex:param value="{!ort.EffectiveDate}" /> 
                  </apex:outputText></td>
               <td style="font-size: 12px;" align="left">
                <apex:outputText value="{0,date,dd'-'MM'-'yyyy}">
                  <apex:param value="{!ort.PoDate}" /> 
                  </apex:outputText></td>
           <td style="font-size: 12px;" align="left" >SP </td>

             </tr>
              
              </apex:repeat>
       </table>
           
            </tr>
            
 <br/>
            <td >
             <span style="font-size: 15px;text-align: right">      <b>Somu Group Of Companies </b></span><br/>   
            <span style="font-size: 15px;text-align: right">      <b>No.20,Somu Centre,29th Main,BTM Layout, </b></span><br/>
            <span style="font-size: 15px;text-align: right">      <b>2nd Stage </b></span><br/>
            <span style="font-size: 15px;text-align: right">        Bangalore 560076</span><br/>
            <span style="font-size: 15px;text-align: right">        Karnataka   </span><br/>
            <span style="font-size: 15px;text-align: right">         India </span><br/><br/>
            </td>
                    <tr>
     <td colspan= "3" align="left">        </td> 
            
            </tr> 
            <tr><td >
<span style="font-size: 15px;"><b>Deliver To : </b> <br/>
                <span style="font-size: 15px;">{!ord.account.shippingStreet}<br/>{!ord.account.shippingcity}<br/>{!ord.account.shippingstate}<br/>{!ord.account.shippingPostalCode}<br/>{!ord.account.shippingcountry}<br/>&nbsp;</span><br/>
                </span><br/>        </td><td >
    <span style="font-size: 15px;text-align: right">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   <b> Bill To : </b></span><br/>
<span style="font-size: 15px;"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {!ord.account.billingStreet}<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  {!ord.account.billingcity}<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  {!ord.account.billingstate}<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  {!ord.account.billingPostalCode}<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   {!ord.account.billingcountry}<br/>&nbsp;</span><br/>                </td>
        </tr>
        </tbody>
</table>
         
      <br/> <table  style="width:100%" border="1" cellspacing="0">
   <tr>
        <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Account Number</b><br/></td>
        <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Supplier Number</b><br/></td>
        <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Payment Terms</b></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Currency</b><br/></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Inncoterms 2010 named place</b><br/></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Ship via</b><br/></td>
        <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Port of Arrival</b></td>
        </tr>
          <apex:repeat value="{!Order}" var="ort">
            <tr>
               
                <td style="font-size: 12px;" align="left" >{!ort.account.name} </td>
                <td style="font-size: 12px;" align="left">{!ort.Supplier_Number__c} </td>
               <td style="font-size: 12px;" align="left">{!ort.Payment_Terms__c} </td>
               <td style="font-size: 12px;" align="left">{!ort.CurrencyIsoCode} </td>
                <td style="font-size: 12px;" align="left" >{!ort.Incoterms_2010_named_place__c} </td>
                <td style="font-size: 12px;" align="left" >{!ort.Ship_Via__c} </td>
                <td style="font-size: 12px;" align="left">{!ort.Port_of_Arrival__c} </td>
             </tr>
              
              </apex:repeat>
          </table>
     <br/> <table style="width:100%" border="1">
     <td style="background-color:#D3D3D3; font-size: 14px;" align="left" width="10%"><b>Confirm To: {!ord.BillToContact.FirstName}{!ord.BillToContact.LastName}</b><br/> </td> 
    <td style="background-color:#D3D3D3; font-size: 14px;" align="left" width="10%"><b>Email: {!ord.BillToContact.Email}</b><br/> </td>
   <td style="background-color:#D3D3D3; font-size: 14px;" align="left" width="10%"><b>Phone: {!ord.BillToContact.Phone}</b><br/> </td>
     </table>
     
     <br/> <table  style="width:100%" border="1" cellspacing="0">
   <tr>
        
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Product</b><br/></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Delivery Date</b></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Qunatity</b><br/></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>UOM</b><br/></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>CAS No</b><br/></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>HSN Code</b></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Unit Price</b></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="10%"><b>Amount</b></td>
         <td  style="background-color:#D3D3D3; font-size: 14px;" align="center" width="30%"><b>Product Description</b><br/></td>

</tr>
          <apex:repeat value="{!ord.orderItems}" var="o">
            <tr>
                
                <td style="font-size: 12px;" align="left" >{!o.Product2.Name} </td>
               <td style="font-size: 12px;" align="left">
                <apex:outputText value="{0,date,dd'-'MM'-'yyyy}">
                  <apex:param value="{!o.Delivery_Date__c}" /> 
                  </apex:outputText></td>
                 <td style="font-size: 12px;" align="left"><apex:outputText value="{0, number, ###,###}">
                          <apex:param value="{!o.Quantity}" />
                          </apex:outputText><br/></td>
                <td style="font-size: 12px;" align="left" >{!o.UOM__c} </td>
                <td style="font-size: 12px;" align="left" >{!o.CAS_No__c} </td>
                <td style="font-size: 12px;" align="left">{!o.HSN_Code__c} </td>
               <td style="font-size: 12px;" align="left">{!o.UnitPrice} </td>
               <td style="font-size: 12px;" align="left">{!o.Total_Price_Incl_GST__c} </td>
                <td style="font-size: 12px;" align="left">{!o.Product2.Description} </td>
</tr>
              </apex:repeat>
              <tr>
   <td style="font-size: 14px;" colspan="7" align="Right">
            <b>Grand Total</b>
            </td>
            <td style="font-size: 12px;" align="left">{!ord.TotalAmount}
            </td>
     <td style="font-size: 12px;" align="left">
            </td><td style="font-size: 12px;" align="left">
            </td>
      </tr>
          </table>
          <table style="width:100%" border="0" cellspacing="0" >
          </table>  
</apex:page>
Any idea how to avoid this? Even that field was in query.

Thanks,
Kezia