Fatal error: Uncaught PHPExcel_Exception: Cell coordinate can not be zero-length

When I try to create a function that fills my data automatically with PHPExcel and a series of fixes, I get the following error:

  

" Fatal error: Uncaught PHPExcel_Exception: Cell coordinate can not be zero-length string in C: \ inetpub \ wwwroot \ QA \ shared \ PHPExcel \ Cell.php: 591 Stack trace: # 0 C: \ inetpub \ wwwroot \ QA \ shared \ PHPExcel \ Worksheet.php (1218): PHPExcel_Cell :: coordinateFromString ('') # 1 C: \ inetpub \ wwwroot \ QA \ shared \ PHPExcel \ Worksheet.php (1178): PHPExcel_Worksheet-> createNewCell ('') # 2 C: \ inetpub \ wwwroot \ QA \ shared \ PHPExcel \ Worksheet.php (1085): PHPExcel_Worksheet-> getCell ('') # 3 C: \ inetpub \ wwwroot \ QA \ ALP009.php (266): PHPExcel_Worksheet-> setCellValue (NULL, 'Table ID') # 4 {main} thrown in C: \ inetpub \ wwwroot \ QA \ shared \ PHPExcel \ Cell.php on line 591 "

I already looked for several sides and I do not give with the error, since I updated my version of PHPExcel since I read that that error was given in previous versions.

My code:

  //Titulo de hoja ALP
    $tituloHojaAlp = array(
        'ID',
        'línea',
        'Modelo',
        'Submodelo',
        'Detalle1',
        'Detalle2',
        'Descripción',
        'Compra Web',
        'Formato',
        'Moneda',
        'Notas',
        'Orden',
        'Salto',
        'Alcance',
        'Amca',
        'Hmx'
    );
    function crearTitulos($objPHPExcel,$arrayTitulos){
    $columnasEx  = array('A1','B1','C1','D1','E1','F1','G1','H1','I1','J1','K1','L1','M1','N1','O1','P1','Q1','R1','S1',
        'T1','U1','V1','W1','X1','Y1','Z1');

    $long     = count($arrayTitulos);
    $conColum = count($columnasEx);
    //ALP

    for ($i = 0; $i < $long; $i++) {

        if ($long == $conColum) {
            break;
        } else {
            $objPHPExcel->setActiveSheetIndex(0)->setCellValue($columnasEx[$i], $arrayTitulos[$i]);

            //  var_dump($columnasEx[$i].$d,$tituloHojaAlp[$i]);
             }
        }
     }
    //llamar la funcion y pasarle el arreglo
  crearTitulos($objPHPExcel,$tituloHojaAlp);