problem slash at the end of url

By the way, I moved the index.php and htaccess from public folder to the root

Just to confirm... Have you updated the default $pathsPath = realpath(FCPATH . '../app/Config/Paths.php'); to match the current directory structure?

Yes, I did otherwise it will not work

This is my pathsPath:

$pathsPath = realpath(FCPATH . 'app/Config/Paths.php');