Fatal error: Uncaught exception 'ImagickException' with message 'Compositing ima

$image_name4=$Process.'4.gif';$inimg3=$Process.'1.jpg';$animation3 = new Imagick();		$animation3->setFormat("gif");		$i=0;		$image4 = new Imagick(realpath($image_name4));		$image4 = $image4->coalesceImages();foreach($image4 as $frame){ 			if(!is_file($inimg3)){				echo  '水印图像不存在';			}			$img = new Imagick();			$img->readImageBlob($frame);			$draw = new ImagickDraw();			$draw->color(0,0,imagick::PAINT_FLOODFILL);			$water = new Imagick(realpath($inimg3));			$draw->composite($water->getImageCompose(),0,0,320, 256,$water);			$img->drawImage($draw);                        $animation3->addImage( $img );			$animation3->setImageDelay( $img->getImageDelay() );//			$draw->destroy();                        $water->destroy();			$img->destroy();}$animation3->writeImages($Process.''.$id.'X.gif', true);//生成3X		$animation3->destroy();