) BadMethodCallException Method [validate] does not exist

furture more it says. note: every thing was working fine till yesterday morning.my laravel version is 5.4.36.

in Controller.php line 82.

at Controller->__call('validate', array(object(Request), array('email' => 'required|string', 'password' => 'required|string'))) in AuthenticatesUsers.php line 63

via Chebli Mohamed