Fatal error: Uncaught Error: Class 'chillerlan\QRCode\Output\QRMarkupSVG' not found

[scooller]

I try to use Logo with SVG but have the error Class not found

/**
 * Create SVG QR Codes with embedded logos (that are also SVG)
 */
class QRSvgWithLogo extends QRMarkupSVG{

	/**
	 * @inheritDoc
	 */
	protected function paths():string{
		$size = (int)ceil($this->moduleCount * $this->options->svgLogoScale);

		// we're calling QRMatrix::setLogoSpace() manually, so QROptions::$addLogoSpace has no effect here
		$this->matrix->setLogoSpace($size, $size);

		$svg = parent::paths();
		$svg .= $this->getLogo();

		return $svg;
	}

	/**
	 * @inheritDoc
	 */
	protected function path(string $path, int $M_TYPE):string{
		// omit the "fill" and "opacity" attributes on the path element
		return sprintf('<path class="%s" d="%s"/>', $this->getCssClass($M_TYPE), $path);
	}

	/**
	 * returns a <g> element that contains the SVG logo and positions it properly within the QR Code
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/g
	 * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/transform
	 */
	protected function getLogo():string{
		// @todo: customize the <g> element to your liking (css class, style...)
		return sprintf(
			'%5$s<g transform="translate(%1$s %1$s) scale(%2$s)" class="%3$s">%5$s	%4$s%5$s</g>',
			(($this->moduleCount - ($this->moduleCount * $this->options->svgLogoScale)) / 2),
			$this->options->svgLogoScale,
			$this->options->svgLogoCssClass,
			file_get_contents($this->options->svgLogo),
			$this->options->eol
		);
	}

}


/**
 * augment the QROptions class
 */
class SVGWithLogoOptions extends QROptions{
	// path to svg logo
	protected string $svgLogo;
	// logo scale in % of QR Code size, clamped to 10%-30%
	protected float $svgLogoScale = 0.20;
	// css class for the logo (defined in $svgDefs)
	protected string $svgLogoCssClass = '';

	// check logo
	protected function set_svgLogo(string $svgLogo):void{

		if(!file_exists($svgLogo) || !is_readable($svgLogo)){
			throw new QRCodeException('invalid svg logo');
		}

		// @todo: validate svg

		$this->svgLogo = $svgLogo;
	}

	// clamp logo scale
	protected function set_svgLogoScale(float $svgLogoScale):void{
		$this->svgLogoScale = max(0.05, min(0.3, $svgLogoScale));
	}

}

$options = new SVGWithLogoOptions([
    'svgLogo'             => ABSPATH.$parsed['path'], // logo from: https://github.com/simple-icons/simple-icons
    'svgLogoScale'        => 0.25,
    'svgLogoCssClass'     => 'dark',
    'version'             => (int)$version,
    'outputType'          => 'custom',
    'outputInterface'     => QRSvgWithLogo::class,
    'imageBase64'         => false,
    'eccLevel'            => $eclevel,
    'drawCircularModules' => true,
    'circleRadius'        => 0.45,
    'connectPaths'        => true,
    'svgDefs'             => '
        <linearGradient id="gradient" x1="100%" y2="100%">
            <stop stop-color="#D70071" offset="0"/>
            <stop stop-color="#9C4E97" offset="0.5"/>
            <stop stop-color="#0035A9" offset="1"/>
        </linearGradient>
        <style><![CDATA[
            .dark{fill: url(#gradient);}
            .light{fill: #eaeaea;}
        ]]></style>'
]);

it the same as the example in https://github.com/chillerlan/php-qrcode/blob/main/examples/svgWithLogo.php

[codemasher]

Hi, see https://github.com/chillerlan/php-qrcode/discussions/194#discussioncomment-5523200

[scooller]

no, it not working for me

[codemasher]

So the example is from dev-main/v5-beta, the question is which version you have installed.
Edit: also, is the autoloader properly working and included?