ubuntu 16.04 - on upgrade (parse-server) project wont run without "sudo"

[rowntreerob]

With last years deprecation of parse, i did the original migration to mongo using mlab implementation and parse-server-example project running on heroku site and it all just worked.

I revisited the project on a dev host using ubuntu, did a fetch and merge which upgraded the parse-server (2.2.n to 4.4.4). The npm upgrade seemed to install ok but now the sample node project will not start unless i use sudo.

I supplied 4 or 5 env var values in the package.json.start script cli.

I expected the project to just run , but without sudo i get the following errors pointing to the arg handler/constructor in "parseServer.js" ....

=======================================
$ npm start

parse-server-example@1.4.0 start /home/rob/src/tmp/parse-server
DATABASE_URI=mongodb://4@31.mlab.com:13931/beacontst APP_ID=Mrc7 MASTER_KEY=L0P SERVER_URL=http://localhost:1337/parse PUBLIC_SERVER_URL=http://120:1337/parse PORT=1337 node index.js

/home/rob/src/tmp/parse-server/node_modules/parse-server/lib/ParseServer.js:460
throw err;
^

TypeError: this is not a typed array.
at Function.from (native)
at Object. (/home/rob/src/tmp/parse-server/node_modules/parse-server/node_modules/ws/lib/PerMessageDeflate.js:8:24)
at Module._compile (module.js:425:26)
at Object.Module._extensions..js (module.js:432:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Module.require (module.js:366:17)
at require (module.js:385:17)
at Object. (/home/rob/src/tmp/parse-server/node_modules/parse-server/node_modules/ws/lib/WebSocket.js:16:27)
at Module._compile (module.js:425:26)
npm ERR! code ELIFECYCLE
npm ERR! errno 7
npm ERR! parse-server-example@1.4.0 start: DATABASE_URI=mongodb://34@31.mlab.com:13931/beacontst APP_ID=0Mrc7 MASTER_KEY=6L0P SERVER_URL=http://localhost:1337/parse PUBLIC_SERVER_URL=http://.120:1337/parse PORT=1337 node index.js
npm ERR! Exit status 7
npm ERR!
npm ERR! Failed at the parse-server-example@1.4.0 start script 'DATABASE_URI=mongodb://34@31.mlab.com:13931/beacontst APP_ID=Mrc7 MASTER_KEY=6L0P SERVER_URL=http://localhost:1337/parse PUBLIC_SERVER_URL=http://120:1337/parse PORT=1337 node index.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the parse-server-example package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! DATABASE_URI=mongodb://@nnn.mlab.com:13931/beacontst APP_ID=Mrc7 MASTER_KEY=L0P SERVER_URL=http://localhost:1337/parse PUBLIC_SERVER_URL=http://136.....20:1337/parse PORT=1337 node index.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs parse-server-example
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls parse-server-example
npm ERR! There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /home/rob/.npm/_logs/2017-03-31T14_38_26_445Z-debug.log

==========================================
when i use sudo , it starts up fine .....

$ sudo npm start
[sudo] password for rob:

parse-server-example@1.4.0 start /home/rob/src/tmp/parse-server
DATABASE_URI=mongodb://34@31.mlab.com:13931/beacontst APP_ID=Mrc7 MASTER_KEY=6L0P SERVER_URL=http://localhost:1337/parse PUBLIC_SERVER_URL=http://120:1337/parse PORT=1337 node index.js

parse-server-example running on port 1337.
info: Parse LiveQuery Server starts running

=======
IF THE NPM UPGRADE INSTALLED OK THEN THE UPGRADED PROJECT SHOULD RUN WITHOUT SUDO