runSequence fails

gistfile1.txt

[22:35:36] 'build' errored after 1.93 ms
[22:35:36] TypeError: gulp.hasTask is not a function
    at /Users/ninoskopac/PhpstormProjects/hosp_web/node_modules/run-sequence/index.js:17:22
    at Array.forEach (native)
    at verifyTaskSets (/Users/ninoskopac/PhpstormProjects/hosp_web/node_modules/run-sequence/index.js:11:11)
    at runSequence (/Users/ninoskopac/PhpstormProjects/hosp_web/node_modules/run-sequence/index.js:70:2)
    at /Users/ninoskopac/PhpstormProjects/hosp_web/gulpfile.js:108:5
    at taskWrapper (/Users/ninoskopac/PhpstormProjects/hosp_web/node_modules/undertaker/lib/set-task.js:13:15)
    at bound (domain.js:280:14)
    at runBound (domain.js:293:12)
    at asyncRunner (/Users/ninoskopac/PhpstormProjects/hosp_web/node_modules/async-done/index.js:36:18)
    at _combinedTickCallback (internal/process/next_tick.js:73:7)