Graviton-App: Large File + Build Error

• Which file is the largest ? > 150 MB ?
• I am getting this error on master
• On npm start :

➜  Graviton-App git:(master) sudo npm start

> Graviton@1.0.2 start /mnt/c/Users/HOME/code/Graviton-App
> electron . GravitonEditor

/mnt/c/Users/HOME/code/Graviton-App/node_modules/electron/dist/electron: error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! Graviton@1.0.2 start: `electron . GravitonEditor `
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the Graviton@1.0.2 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/kogam22/.npm/_logs/2019-06-19T15_34_34_127Z-debug.log
➜  Graviton-App git:(master)

The log file :

➜  Graviton-App git:(master) cat /home/kogam22/.npm/_logs/2019-06-19T15_34_34_127Z-debug.log
0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'start' ]
2 info using npm@6.9.0
3 info using node@v12.4.0
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle Graviton@1.0.2~prestart: Graviton@1.0.2
6 info lifecycle Graviton@1.0.2~start: Graviton@1.0.2
7 verbose lifecycle Graviton@1.0.2~start: unsafe-perm in lifecycle true
8 verbose lifecycle Graviton@1.0.2~start: PATH: /usr/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/mnt/c/Users/HOME/code/Graviton-App/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
9 verbose lifecycle Graviton@1.0.2~start: CWD: /mnt/c/Users/HOME/code/Graviton-App
10 silly lifecycle Graviton@1.0.2~start: Args: [ '-c', 'electron . GravitonEditor ' ]
11 info lifecycle Graviton@1.0.2~start: Failed to exec start script
12 verbose stack Error: Graviton@1.0.2 start: `electron . GravitonEditor `
12 verbose stack spawn ENOENT
12 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:48:18)
12 verbose stack     at ChildProcess.emit (events.js:200:13)
12 verbose stack     at maybeClose (internal/child_process.js:1021:16)
12 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:283:5)
13 verbose pkgid Graviton@1.0.2
14 verbose cwd /mnt/c/Users/HOME/code/Graviton-App
15 verbose Linux 4.4.0-17134-Microsoft
16 verbose argv "/usr/bin/node" "/usr/bin/npm" "start"
17 verbose node v12.4.0
18 verbose npm  v6.9.0
19 error file sh
20 error code ELIFECYCLE
21 error errno ENOENT
22 error syscall spawn
23 error Graviton@1.0.2 start: `electron . GravitonEditor `
23 error spawn ENOENT
24 error Failed at the Graviton@1.0.2 start script.
24 error This is probably not a problem with npm. There is likely additional logging output above.
25 verbose exit [ 1, true ]