I am not able to use the sign function to add an image to a pdf file. Below is what I am using to try to output a new pdf file with an image. The file this is output has a working certificate, but the image does not show anywhere. I have tried default AccessPermission of 2 and tried to force 3, but nothing seems to work and I am not getting any errors.
$sign->sign('../../webtemp/output.pdf',[ 'x' => '10', 'y' => '10', 'w' => '90', 'h' => '66', 'accessPermission' => '3'],[ 'x' => '10', 'y' => '10', 'w' => '90', 'h' => '66', 'src' => '/var/www/webtemp/image.png']);