Web Self Service

[Floyd Nickson]

Hello Devs
Am trying to run Web Self Service and am getting this error
internal/modules/cjs/loader.js:985
  throw err;
  ^

Error: Cannot find module 'gulp-util'
Require stack:
- /usr/lib/nodejs/gulp/bin/gulp.js
    at Function.Module._resolveFilename
(internal/modules/cjs/loader.js:982:15)
    at Function.Module._load (internal/modules/cjs/loader.js:864:27)
    at Module.require (internal/modules/cjs/loader.js:1044:19)
    at require (internal/modules/cjs/helpers.js:77:18)
    at Object.<anonymous> (/usr/lib/nodejs/gulp/bin/gulp.js:4:13)
    at Module._compile (internal/modules/cjs/loader.js:1158:30)
    at Object.Module._extensions..js
(internal/modules/cjs/loader.js:1178:10)
    at Module.load (internal/modules/cjs/loader.js:1002:32)
    at Function.Module._load (internal/modules/cjs/loader.js:901:14)
    at Function.executeUserEntryPoint [as runMain]
(internal/modules/run_main.js:74:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/usr/lib/nodejs/gulp/bin/gulp.js' ]
}