Error in npm-install mozaik demo.

[BradPrit09]

I have been trying to install the moziak demo provide in the getting started .After npm install ,the post-install process is failing .
I have Node.js : 10.16 ; npm :6.9.0 in my system install

24552 silly postinstall mozaik-dashboard@
24553 info lifecycle mozaik-dashboard@~postinstall: mozaik-dashboard@
24554 verbose lifecycle mozaik-dashboard@~postinstall: unsafe-perm in lifecycle true
24555 verbose lifecycle mozaik-dashboard@~postinstall: PATH: C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;F:\Moziak\mozaik-demo\node_modules\.bin;C:\Windows\System32;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;c:\Program Files (x86)\HP\HP Performance Advisor;C:\Program Files\nodejs\;C:\Program Files\MongoDB\Server\4.0\bin;C:\Program Files\Git\cmd;C:\Program Files\mosquitto;C:\Program Files\Java\jre1.8.0_221\bin;C:\Program Files (x86)\sbt\bin;C:\Program Files (x86)\sbt\bin;C:\Program Files\Java\jdk1.8.0_221\bin;C:\Program Files\PuTTY;C:\Program Files\OpenSSL-Win64\bin;C:\PortQryV2;C:\ProgramData\chocolatey\bin;C:\Go\src;C:\Go\bin;C:\elasticsearch-7.5.0\bin;C:\kibana-7.5.0-windows-x86_64\bin;C:\Windows\System32;C:\Users\USER\AppData\Local\Programs\Python\Python37\Scripts\;C:\Users\USER\AppData\Local\Programs\Python\Python37\;C:\Users\USER\.windows-build-tools\python27\;C:\Users\USER\AppData\Local\Programs\Python\Python37-32\Scripts\;C:\Users\USER\AppData\Local\Programs\Python\Python37-32\;C:\Users\USER\AppData\Roaming\npm;C:\Users\USER\AppData\Local\Programs\Microsoft VS Code\bin;C:\Program Files\Docker Toolbox;C:\PortQryV2;C:\Program Files (x86)\Nmap;C:\Users\USER\AppData\Local\.meteor;C:\Go\src;
24556 verbose lifecycle mozaik-dashboard@~postinstall: CWD: F:\Moziak\mozaik-demo
24557 silly lifecycle mozaik-dashboard@~postinstall: Args: [ '/d /s /c',
24557 silly lifecycle   'if $BUILD_ASSETS; then npm run build-assets; fi' ]
24558 silly lifecycle mozaik-dashboard@~postinstall: Returned: code: 1  signal: null
24559 info lifecycle mozaik-dashboard@~postinstall: Failed to exec postinstall script
24560 verbose stack Error: mozaik-dashboard@ postinstall: `if $BUILD_ASSETS; then npm run build-assets; fi`
24560 verbose stack Exit status 1
24560 verbose stack     at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
24560 verbose stack     at EventEmitter.emit (events.js:198:13)
24560 verbose stack     at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
24560 verbose stack     at ChildProcess.emit (events.js:198:13)
24560 verbose stack     at maybeClose (internal/child_process.js:982:16)
24560 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
24561 verbose pkgid mozaik-dashboard@
24562 verbose cwd F:\Moziak\mozaik-demo
24563 verbose Windows_NT 6.1.7601
24564 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
24565 verbose node v10.16.0
24566 verbose npm  v6.9.0
24567 error code ELIFECYCLE
24568 error errno 1
24569 error mozaik-dashboard@ postinstall: `if $BUILD_ASSETS; then npm run build-assets; fi`
24569 error Exit status 1
24570 error Failed at the mozaik-dashboard@ postinstall script.
24570 error This is probably not a problem with npm. There is likely additional logging output above.
24571 verbose exit [ 1, true ]