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3/31/26
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Comment on [#14833] Error when communicating with the server with PDF Attachements
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> Your version of imagick is indeed too old. The reason for the > changes is that Imagick::flattenImages() which was used previously in > the generation of the PDF thumbnails was removed in 3.3.0: > > https://pecl.php.net/package-info.php?package=imagick&version=3.3.0 > > The replacement for this is > > $im->setImageBackgroundColor('white'); > $im->setImageAlphaChannel(Imagick::ALPHACHANNEL_REMOVE); > $im->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN); > > so this pulls in the requirement for this constant, which was added > in 3.2.0b2: > > https://pecl.php.net/package-info.php?package=imagick&version=3.2.0b2 > > Note that 3.3.0 was released more than two years ago and 3.2.0b2 has > been available for almost five years already, released mere weeks > after 3.1.2 was released.
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