Nicht erfasster TypeError: this._eth.sendTransaction ist keine Funktion

Hallo, ich versuche, ein Abstimmungsmodul zu erstellen, mit dem der Benutzer durch Drücken des Optionsfelds Stimmen abgeben kann. Aber wenn ich starte, kommt dieser Fehler.

Uncaught TypeError: this._eth.sendTransaction is not a function

Das ist mein Skript

    if(typeof web3 != 'undefined'){
    web3 = new Web3(web3.currentProvider);
     web3.eth.defaultAccount = web3.eth.accounts[0];}else {
      web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:7545")); 
 }
    web3.eth.defaultAccount = web3.eth.accounts[0];

  var SuffrageContract = new web3.eth.contract([
  {
    "constant": true,
    "inputs": [],
    "name": "getInstructor",
    "outputs": [
      {
        "name": "",
        "type": "string"
      },
      {
        "name": "",
        "type": "string"
      },
      {
        "name": "",
        "type": "string"
      },
      {
        "name": "",
        "type": "string"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_id",
        "type": "string"
      },
      {
        "name": "_president",
        "type": "string"
      },
      {
        "name": "_vice",
        "type": "string"
      },
      {
        "name": "_party",
        "type": "string"
      }
    ],
    "name": "setInstructor",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  }

    ]);
    var Suffrage = SuffrageContract.at('0x3b2e13c156ebb392074066ee414f42c4c59b761d');
        console.log(Suffrage);


  $("#submit").click(function(){


     var president,vp,party;
     //Get President
      if($('#pres1').is(':checked')){
        president = $('#pres1').val();

      }
      else if($("#pres2").is(':checked')){
        president = $('#pres2').val();
      }  
      else if($("#pres3").is(':checked')){
        president = $('#pres3').val();
      }  
      else if($("#pres4").is(':checked')){
        president = $('#pres4').val();
      }  
      else if($("#pres5").is(':checked')){
        president = $('#pres5').val();
      }  
      else if($("#pres6").is(':checked')){
        president = $('#pres6').val();
      }  
        //Get Vice President
       if($('#vp1').is(':checked')){
        vp = $('#vp1').val();

      }
      else if($("#vp2").is(':checked')){
        vp = $('#vp2').val();
      }  
      else if($("#vp3").is(':checked')){
        vp = $('#vp3').val();
      }  
      else if($("#vp4").is(':checked')){
        vp = $('#vp4').val();
      }  
      else if($("#vp5").is(':checked')){
        vp = $('#vp5').val();
      }  
      else if($("#vp6").is(':checked')){
        vp = $('#vp6').val();
      }  

      //Get Party List
       if($('#party1').is(':checked')){
        party = $('#party1').val();

      }
      else if($("#party2").is(':checked')){
        party = $('#party2').val();
      }  
      else if($("#party3").is(':checked')){
        party = $('#party3').val();
      }  
      else if($("#party4").is(':checked')){
        party = $('#party4').val();
      }  
      else if($("#party5").is(':checked')){
        party = $('#party5').val();
      }  
      else if($("#party6").is(':checked')){
        party = $('#party6').val();
      }  
      else if($("#party7").is(':checked')){
        party = $('#party7').val();
      }  
      else if($("#party8").is(':checked')){
        party = $('#party8').val();
      }  
      else if($("#party9").is(':checked')){
        party = $('#party9').val();
      }  
      else if($("#party10").is(':checked')){
        party = $('#party10').val();
      }  
      else if($("#party11").is(':checked')){
        party = $('#party11').val();
      }  
       else if($("#party12").is(':checked')){
        party = $('#party12').val();
      }  

          Suffrage.setInstructor('sample id', president, vp, party, function(err,result){

                console.log(err,result);
            });

  });


</script>

Ich weiß nicht was los ist bitte helft mir. Jede Antwort wird akzeptiert und geschätzt. Danke schön. :)