Build fails on Windows.

[MikeVaz]

npm run build

...
[13:21:21] Starting '_packageTemplates'...
Bundling:  alp
Finished Bundling:  alp
Bundling:  themes_2
Finished Bundling:  themes_2
C:\...\ampstart\node_modules\fs-extra\lib\mkdirs\mkdirs-sync.js:20
    throw errInval
    ^

Error: C:\...\ampstart\.archive\alp\C:\Users\...\ampstart\dist\templates contains invalid WIN32 path characters.

Where ... is my local path to the project Users\******\Documnets\projects\