Problem with "portaljs" from repository git

I can’t to run the portaljs.

The console show this error:

'npm-run-all' is not recognized as an internal or external command,
operable program or batch file.
    Tasks directory "tasks" not found.

''npm-run-all' is not recognized as an internal or external command,
operable program or batch file.
    Tasks directory "tasks" not found.

Help me please

with this software “bonita-portal-js” from repository git.

I make the steps but the console show this error and not run the portaljs

Have no idea what your talking about…

What software? What Environment? I’ve never seen a npm-run-all command

regards