从php执行时找不到xauth命令

Question

I want to create a pdf with wkhtmltopdf with php (https://github.com/mikehaertl/phpwkhtmltopdf) but I'm getting the error: which: no xauth in ((null)) xvfb-run: error: xauth command not found

I tried to reinstall Xvfb and I tried to install xorg-auth but it didn't work.

I'm using the following code:

$view = "<some-interesting-html></some-interesting-html>"
$pdf = new Pdf($view);
$pdf->setOptions(array(
    'no-outline',
    'use-xserver',
    'commandOptions' => array(
        'useExec' => false,
        'enableXvfb' => true,
        'xvfbRunBinary' => '/usr/bin/xvfb-run',
    ),
));

if (!$pdf->saveAs($filename)) {
    $error = $pdf->getError();
    $this->debug($error);
}

I tried it with different options and even without options set but it all returns in the same error

The server is running on CentOS Linux release 7.6.1810 (Core)