Error: Cannot find module 'shelljs'

[defineconst]

root@ubuntu:/home/hadoop# LightViz -V module.js:487 throw err; ^

Error: Cannot find module 'shelljs' at Function.Module._resolveFilename (module.js:485:15) at Function.Module._load (module.js:437:25) at Module.require (module.js:513:17) at require (internal/module.js:11:18) at Object. (/usr/local/lib/node_modules/light-viz/bin/light-viz-cli.js:7:15) at Module._compile (module.js:569:30) at Object.Module._extensions..js (module.js:580:10) at Module.load (module.js:503:32) at tryModuleLoad (module.js:466:12) at Function.Module._load (module.js:458:3) root@ubuntu:/home/hadoop# /usr/local/bin/LightViz --data /home/hadoop/Downloads/ParaViewData-v4.4.0 --port 8061 --paraview /home/hadoop/Downloads/ParaView-5.4.1-822-g597adef-Qt5-MPI-Linux-64bit module.js:487 throw err; ^

Error: Cannot find module 'shelljs' at Function.Module._resolveFilename (module.js:485:15) at Function.Module._load (module.js:437:25) at Module.require (module.js:513:17) at require (internal/module.js:11:18) at Object. (/usr/local/lib/node_modules/light-viz/bin/light-viz-cli.js:7:15) at Module._compile (module.js:569:30) at Object.Module._extensions..js (module.js:580:10) at Module.load (module.js:503:32) at tryModuleLoad (module.js:466:12) at Function.Module._load (module.js:458:3) root@ubuntu:/home/hadoop#