Error at Login - "The action you requested is not allowed

of course, CI 4+ has strong CSRF capability and CSRF is not concerned with your filter. in my base opinion try to off

Code:

CSRF

then try it if it is working also try to clear the cache

Code:

php spark cache: clear

in your new server sometimes server may take a while to accept a new cache. another  solution try to remove //in front of

PHP Code:

$routes->match(['get', 'post'], 'login',  'User_public\Login\Login_Controller::login_create',  ['filter' => 'LoggedInNoAccessFilter']); 


another way try to check PHP  v. these are among gave some headaches in the past now there is also CSRF attention needed on also CI 4.3.1 I have recently faced the same on this new version  with its shield  Auth

Codeigniter First, Codeigniter Then You!!

yekrinaDigitals