Error in phalcon scaffold

Phalcon Devtools (2.0.0) PHP 5.5 Mysql 5.5.34 Apache 2.2.27 I installed with compose I created a project I Created models with the phalcon models commands, it works. When I want to scaffold, the only answer I have is

Error: Parameter 'index' must be a string.

Like that: [~/public_html/xxxxxxxxxxxxxxx.com/etht]# phalcon scaffold Membre Phalcon DevTools (2.0.0)
Error: Parameter 'index' must be a string

If I create Controller first with the command phalcon controller, it goes a little bit further, it create 2 files:
[~/public_html/xxxxxxxxxxxxxxx.com/etht]# ../phalcon-devtools/phalcon controller Membre ```

Phalcon DevTools (2.0.0)    
  Success: Controller "Membre" was successfully created.
[~/public_html/xxxxxxxxxxxxxxx.com/etht]# ../phalcon-devtools/phalcon scaffold Membre
Phalcon DevTools (2.0.0)

/home/wdiqcca/public_html/xxxxxxxxxxxxxxx.com/etht/app/views/layouts/membre.phtml
/home/wdiqcca/public_html/xxxxxxxxxxxxxxx.com/etht/app/views/membre/index.phtml

  Error: Parameter 'index' must be a string

So I look for index parameter, didn't find it. What am I missing?