protected function renderError() {	
	    $error = I18N::translate('The media file was not found in this family tree.');

    	$width  = (mb_strlen($error) * 6.5 + 50) * 1.15;
    	$height = 60;
    	$im     = imagecreatetruecolor($width, $height); /* Create a black image */
    	$bgc    = imagecolorallocate($im, 255, 255, 255); /* set background color */
    	imagefilledrectangle($im, 2, 2, $width - 4, $height - 4, $bgc); /* create a rectangle, leaving 2 px border */
    
    	$this->embedText($im, $error, 100, '255, 0, 0', WT_ROOT . Config::FONT_DEJAVU_SANS_TTF, 'top', 'left');
    
    	http_response_code(404);
    	header('Content-Type: image/png');
    	imagepng($im);
    	imagedestroy($im);
	}