Samples-js-vue: npm start does not work for me

I followed the instruction for samples-js-vue, in particular the custom-login and it does not work for me- I get the error log below. Any help greatly appreciated.
/Dec

0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli ‘C:\Program Files\nodejs\node.exe’,
1 verbose cli ‘C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js’,
1 verbose cli ‘start’
1 verbose cli ]
2 info using npm@6.13.4
3 info using node@v12.14.0
4 verbose stack Error: missing script: start
4 verbose stack at run (C:\Program Files\nodejs\node_modules\npm\lib\run-script.js:155:19)
4 verbose stack at C:\Program Files\nodejs\node_modules\npm\lib\run-script.js:63:5
4 verbose stack at C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:116:5
4 verbose stack at C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:436:5
4 verbose stack at checkBinReferences_ (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:391:45)
4 verbose stack at final (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:434:3)
4 verbose stack at then (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:161:5)
4 verbose stack at C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:382:12
4 verbose stack at C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\graceful-fs.js:115:16
4 verbose stack at FSReqCallback.readFileAfterClose [as oncomplete] (internal/fs/read_file_context.js:61:3)
5 verbose cwd D:\home\projects\trunk\projects\VoiceToText\samples-js-vue
6 verbose Windows_NT 10.0.17763
7 verbose argv “C:\Program Files\nodejs\node.exe” “C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js” “start”
8 verbose node v12.14.0
9 verbose npm v6.13.4
10 error missing script: start
11 verbose exit [ 1, true ]

I believe you have to run npm install inside one of the sample apps instead of at the project root directory.