Uploader target path

I have the latest Vault version installed on Mac running apache.

Using the example 01_init.html on FF. When I select any file I get the message ‘Not Found’

The example has the path set as follows

<script>
            var vault = new dhx.Vault("vault", {
                uploader: {
                    target: "/backend/upload"
                }
            });
        </script>

The directories exist and the path permissions are correct. I tried to change the path to absolute and relative but I always get the ‘Not Found’ message.

What is the expected behaviour for this example?
What is the correct path setting ?

please, try to use the node js.
in the root directory of the vault package in the command line you need to call:

npm start