XML Parsing error; PHPWord

I am using PHPOffice/PHPWord in my Laravel Application. It is used to generate a .docx document with results in tables. This works great for a document of 3 tables with 6 rows, but when there are more rows the document is generated but when opening it the following error occurs:

We're sorry, We can't open (documentname) because we found a problem with its contents.

Details: XML parsing error Location: Part:/word/document.xml, Line: 2, Column 14349. 

Now, I have started working on another result page where I would also want to generate a .docx document. This will contain 5 tables, but with 3 rows I get the same XML parsing error but in a different location (Location: Part: /word/document.xml, Line:4, Column:2888). Could someone explain to me whether this is a error in my code, or phpword/words?

I have done some troubleshooting by deleting everything, and slowly adding new rows. I have found the error but how could i fix it. The first two tables are generated good..

    $phpWord = new \PhpOffice\PhpWord\PhpWord();

    $section = $phpWord->addSection();
    $section->addImage('../public/img/2.jpg', array('width' => 230, 'height' => 65, 'alignment' => 'left'));
    $section->addText('Project IDs:' . $parameter);
    $header =$section->addHeader();
    $header->addText('Results Summary');

    $section->addLine(
        array(
            'width'       => \PhpOffice\PhpWord\Shared\Converter::cmToPixel(16),
            'height'      => \PhpOffice\PhpWord\Shared\Converter::cmToPixel(0),
            'positioning' => 'absolute',
        )
    );
    $tableName = 'rStyle';
    $phpWord->addFontStyle($tableName, array('italic' => true, 'size' => 12));
    $thName = 'tStyle';
    $phpWord->addFontStyle($thName, array('bold' => true, 'size' => 9));

    $section->addText('General Information Table', $tableName);
    $fancyTableStyle = array('borderSize' => 6, 'borderColor' => '999999');
    $spanTableStyleName = 'Overview tables';
    $phpWord->addTableStyle($spanTableStyleName, $fancyTableStyle);
    $table = $section->addTable($spanTableStyleName);
    $table->addRow(null, array('tblHeader' => true, 'cantSplit' => true));
    $table->addCell(1750)->addText('Project ID',$thName);
    $table->addCell(1750)->addText('Description',$thName);
    $table->addCell(1750)->addText('Notes',$thName);
    foreach ($id_array_explode as $char) {
        $table->addRow();
        $singlenumber = (int)$char;
        $cursor = $collection->find(array("id" => $singlenumber));
        foreach ($cursor as $document) {
                    $table->addCell(1750)->addText($document["project_id"]);
                    $table->addCell(1750)->addText($document["description"]);
                    $table->addCell(1750)->addText($document["notes"]);
        }
    }
    $section->addText('        
');
    $section->addLine(
        array(
            'width'       => \PhpOffice\PhpWord\Shared\Converter::cmToPixel(16),
            'height'      => \PhpOffice\PhpWord\Shared\Converter::cmToPixel(0),
            'positioning' => 'absolute',
        )
    );
    $section->addText('Input Table', $tableName);
    $table1 = $section->addTable($spanTableStyleName);
    $table1->addRow(null, array('tblHeader' => true, 'cantSplit' => true));
    $table1->addCell(1750)->addText('Project ID',$thName);
    $table1->addCell(1750)->addText('#',$thName);
    foreach ($id_array_explode as $char) {
        $table1->addRow();
        $singlenumber = (int)$char;
        $cursor = $collection->find(array("id" => $singlenumber));
        foreach ($cursor as $document) {
            if (is_array($document['input'])) {
                foreach ($document['input'] as $samples) {
                    $table1->addCell(1750)->addText($document["project_id"]);
                    $table1->addCell(1750)->addText($samples['nr']);
                }
            }
        }
    }
    $section->addText('        
');
    $section->addLine(
        array(
            'width'       => \PhpOffice\PhpWord\Shared\Converter::cmToPixel(16),
            'height'      => \PhpOffice\PhpWord\Shared\Converter::cmToPixel(0),
            'positioning' => 'absolute',
        )
    );
    $section->addText('Output Table', $tableName);
    $table2 = $section->addTable($spanTableStyleName);
//// THIS IS WHERE THE ERROR OCCURS!! 
        $table2->addRow(null, array('tblHeader' => true, 'cantSplit' => true));
        $table2->addCell(1750)->addText('ID',$thName);

Thank you!

SOLUTION Oke, so I have deleted the whole document and added every single sentence separately to see where the error occurred. This led to seeing that the error came from the data which I was getting. It couldn't handle ">" and "&" signs!

So, if you every have this error, check the data which you're printing!

A better solution is to add the following line of code before you do anything with the word document:

PhpOffice\PhpWord\Settings::setOutputEscapingEnabled(true);

This will automatically escape any problematic characters.