URL jump error, method does not exist: app\index\controller\User->{:url('index())

Question

Video 10-3 Preliminary implementation of the user registration function, starting at 27 minutes 10, after the url jump in the video is changed to the url method, an error is reported: The method does not exist: app\index\controller\User->{:url ('index(), and then the address bar on the browser looks strange /index.php/index/user/{:url('index/index/index')} How to solve it

Answer 1

tag not parsed