Search results page 21 unavailable ?

/**
 * Copyright WLAD ( http://wonderfl.net/user/WLAD )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/o7Wq
 */

/*

WFL Database will load search results up to page 20, After it will print "503
Service Unavailable"

Link working - http://wonderfl.net/search?y=0&page=20&q=flash&x=0

Link not 503 - http://wonderfl.net/search?y=0&page=21&q=flash&x=0

*/

package{import flash.display.Sprite;import flash.text.TextField;public class X extends Sprite {public function X(){graphics.beginFill(0);graphics.drawRect(0,0,1000,1000);var t:TextField = new TextField();t.text = "?";t.autoSize = 'left';t.scaleX = 15;t.scaleY = 15;addChild( t );t.x = ( stage.stageWidth - t.width ) / 2;t.y = ( stage.stageHeight - t.height ) / 2;t.textColor = 0xFFFFFF;}}}