phalcon/cphalcon · error · Phalcon\Image\Exception

Imagick::getImageAlphaChannel failed

Error message

Imagick::getImageAlphaChannel failed

What it means

Error "Imagick::getImageAlphaChannel failed" thrown in phalcon/cphalcon.

Source

Thrown at phalcon/Image/Adapter/Imagick.zep:273

        let pixel2       = new ImagickPixel("transparent");
        let background   = new ImagickNative();

        /** @var ImagickNative $image */
        let image = this->image;

        image->setIteratorIndex(0);

        while (true) {
            background->newImage(this->width, this->height, pixel1);

            try {
                if (true !== background->getImageAlphaChannel()) {
                    background->setImageAlphaChannel(
                        constant("Imagick::ALPHACHANNEL_SET")
                    );
                }
            } catch ImagickException {
                throw new Exception("Imagick::getImageAlphaChannel failed");
            }

            background->setImageBackgroundColor(pixel2);

            background->evaluateImage(
                constant("Imagick::EVALUATE_MULTIPLY"),
                localOpacity,
                constant("Imagick::CHANNEL_ALPHA")
            );

            background->setColorspace(
                image->getColorspace()
            );

            let result = background->compositeImage(
                image,
                constant("Imagick::COMPOSITE_DISSOLVE"),
                0,

View on GitHub (pinned to b7419de9cd)

When it happens

Trigger: Thrown at phalcon/Image/Adapter/Imagick.zep:273 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of phalcon/cphalcon@b7419de9cd (2026-08-21). Data as JSON: /api/errors/6860950f077b1196. Report an issue: GitHub.