I tried to use setDisplayBlankAs() method as shown in documentation at:
https://phpoffice.github.io/PHPPresentation/usage/shapes/chart.html#customization
but I got an error:
PhpOffice\PhpPresentation\Shape\Chart\Type\Line::setDisplayBlankAs() {"exception":"[object] (Error(code: 0): Call to undefined method PhpOffice\PhpPresentation\Shape\Chart\Type\Line::setDisplayBlankAs() at...
This error likely says the method is missing. I wonder what is wrong with my code:
use PhpOffice\PhpPresentation\Shape\Chart;
// ...
$lineChart = new Chart\Type\Line();
$lineChart->setDisplayBlankAs(Chart::BLANKAS_GAP);
$lineChart->addSeries($series);
$oShape = $currentSlide->createChartShape();
$oShape->getPlotArea()->setType($lineChart);
// ... etc.
Without the line with setDisplayBlankAs() method my code works as expected.
Latest PHPOffice/PHPPresentation installed via Composer about a month ago.