无法创建Symfony 4项目

i'm working already with symfony 3, I've create a lot of project with it, so now i'm trying to create a project with symfony 4, but i can't when i type this command :

composer create-project symfony/skeleton my-project-symf-4

the project is created successfully, but the problem that is created with this version 3.4 instead of 4.2,

Installing symfony/skeleton (v3.4.22.1)
  - Installing symfony/skeleton (v3.4.22.1): Downloading (100%)
Created project in my-project-symf-4
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Package operations: 22 installs, 0 updates, 0 removals
  - Installing symfony/flex (v1.1.8): Downloading (100%)

Prefetching 21 packages
  - Downloading (100%)
  - Installing psr/cache (1.0.1): Loading from cache
  - Installing psr/container (1.0.0): Loading from cache
  - Installing psr/simple-cache (1.0.1): Loading from cache
  - Installing symfony/polyfill-mbstring (v1.10.0): Loading from cache
  - Installing psr/log (1.1.0): Loading from cache
  - Installing symfony/debug (v3.4.22): Loading from cache
  - Installing symfony/console (v3.4.22): Loading from cache
  - Installing symfony/dotenv (v3.4.22): Loading from cache
  - Installing symfony/routing (v3.4.22): Loading from cache
  - Installing symfony/http-foundation (v3.4.22): Loading from cache
  - Installing symfony/event-dispatcher (v3.4.22): Loading from cache
  - Installing symfony/http-kernel (v3.4.22): Loading from cache
  - Installing symfony/finder (v3.4.22): Loading from cache
  - Installing symfony/filesystem (v3.4.22): Loading from cache
  - Installing symfony/dependency-injection (v3.4.22): Loading from cache
  - Installing symfony/config (v3.4.22): Loading from cache
  - Installing symfony/class-loader (v3.4.22): Loading from cache
  - Installing symfony/polyfill-apcu (v1.10.0): Loading from cache
  - Installing symfony/cache (v3.4.22): Loading from cache
  - Installing symfony/framework-bundle (v3.4.22): Loading from cache
  - Installing symfony/yaml (v3.4.22): Loading from cache
Generating autoload files

So as you can see the composer load all packages from cache. I've try to clear composer cache like this:

$ composer clearcache 

but without result, the problem still exist.

My PHP Version is 7.3.1

Can anyone help me to resolve that problem?

Try to pass the symfony version (4.2 for example) like that:

composer create-project symfony/skeleton:4.2 my-project-symf-4

Hope this helps!