[Flow] how to upgrade from flow 2.1 to 2.2 / 2.3

[Mira]

The same error while and after trying this. 
 

> Robin Lehrmann <role at vkf-renzel.de> hat am 18. Februar 2015 um 13:05
> geschrieben:
> 
>  Hi,
> 
>  Am 18.02.2015 um 13:01 schrieb Mira:
> 
>      > > I don't know what you mean.
> >      Where I can check this? You need a paste of any file for this?
> > 
> >  > I mean your Models in Vendor.Package/Domain/Model/Example.php
> 
>  I suggest that you backup your packages in a separate directory and try to
> execute ./flow flow:cache:clear -f
> 
>  Then move the Packages back to your Packages Directory in
> Packages/Application and execute ./flow doctrine:validate
> 
>  Cheers,
> 
>  Robin
>