I have a page which is extended by the "EmailPDFController" class as seen bleow.

The problem is that the getContent call cuases an error and I have no idea why.

What I am trying to do is create a pdf and mail it to myself.  Creating the pdf works fine but sending it to myself is not working.

See code below.  Try and catch blocks are deliberatly commented out.

public with sharing class EmailPDFController {
    public EmailPDFController (ApexPages.StandardController controller){    
        // try {
            Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
            String[] toAddresses = new String[]{'firstname.lastname@company.domain'};
            String[] CopyToAddresses = new String[]{'tname@company.domain','firstname.lastname@company.domain'};
            mail.setToAddresses(toAddresses);
            // mail.setCcAddresses(CopyToAddresses);
            mail.setBccAddresses(CopyToAddresses);
            mail.setReplyTo('x@y.com');        
            mail.setSenderDisplayName('x y');
            mail.setSubject('PDF Invoise ');
            // mail.setBccSender(false);
            mail.setUseSignature(false);
            String msg = '<p><b>Hellow</b></p>';

            PageReference congratsPage = ApexPages.currentPage();
            Blob b = congratsPage.getContent();
            Messaging.EmailFileAttachment efa = new Messaging.EmailFileAttachment();
            efa.setFileName('MyPDF.pdf'); // neat - set name of PDF
            efa.setBody(b); //attach the PDF
            mail.setFileAttachments(new Messaging.EmailFileAttachment[] {efa});
            
            mail.setHtmlBody(msg);
            Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail});
//        } catch (Exception e){}
    }
    
    @IsTest(SeeAllData=true) public static void testEmailPDFController() {
        ApexPages.StandardController c;
        EmailPDFController EPDFC = new EmailPDFController(c);
        try {
            // System.assertEquals(EPDFC.EmailPDFController(),null);    
        }
        catch (Exception e){}
    }
}