We repaired your presentation. Pie Work but not Bar

[alaglil]

I visualize the rendering online, when I change from Bar to Pie it works well but with Bar an empty page is displayed, at the beginning I have the result with Bar but at certain times it is no longer displayed, it drives me crazy.

$objPHPPresentation = new PhpPresentation();
$barChartHorz = new Bar(); // this work with Pie but not with Bar
$currentSlide = $objPHPPresentation->getActiveSlide();
// Create a shape (chart)

    $shape = $currentSlide->createChartShape();

    $shape->getPlotArea()->setType($barChartHorz);

    $oWriterPPTX = IOFactory::createWriter($objPHPPresentation, 'PowerPoint2007');
    $fileName = 'bars.pptx';
    $file_path = public_path('ppt/' . $fileName);
    $oWriterPPTX->save($file_path);  

[benjaminLedel]

Try using the Version in the develop branch. The master branch is a bit outdated.