Problem installing shiraz plugin on node.js server

I tried installing shiraz plugin on node.js server but the plugins is found missing in the config/plugins list after starting again the server.

In my tiddlywiki.info files there is:

{
    "description": "Basic client-server edition",
    "languages" : [
        "fr-FR"
    ],
    "plugins": [
        "tiddlywiki/tiddlyweb",
        "tiddlywiki/filesystem",
        "tiddlywiki/highlight",
        "kookma/shiraz"
    ],
(....)

And now my directory structure (the root level where tiddlywiki.info lies is proteva-data/proteva):

proteva-data/proteva/plugins/kookma/
└── shiraz
    ├── images
    ├── macros
    │   ├── csvtables
    │   └── dtables
    ├── styles
    │   ├── bs
    │   ├── misc
    │   └── multicols
    ├── templates
    │   ├── body
    │   ├── footer
    │   └── header
    ├── ui
    │   ├── Buttons
    │   └── ControlPanel
    └── viewtemplates

Il also tried to have plugins under proteva-data/proteva/tiddlersbut it also fails.

What should I have done to get it right?

Would you please share the message (error/warning) returned!

Try this

proteva-data/proteva/plugins/shiraz

remove kookma folder and put shiraz directly in plugins folder

e.g

proteva-data/proteva/plugins/
└── shiraz
    ├── images
    ├── macros
    │   ├── csvtables
    │   └── dtables

Yes, putting shiraz directly in plugins folder has solved the problem! Many thanks @Mohammad. Maybe one should update the documentation for node.js.