Not working with digest-brunch

[solisoft]

Hi, I'm trying to use it on my project, but it can't find files because of my digest-brunch plugin which change filenames...

error: Optimizing of dist/css/css.css failed. UnCSS: expected a callback

Here my dist tree :

dist
├── css
│   └── vendors-5338fe75.css
├── index.html
└── js
    ├── js-3a8da863.js
    └── vendors-f1d3ed69.js

Notice that the number will change on any modification

Any idea?