Why is Gulp launching stuck?

Question

gulp.js

Gulp launch hangs.

$ gulp serve
[17:24:16] Failed to load external module babel-register
[17:24:16] Requiring external module babel-core/register
[17:24:50] Using gulpfile C:\work_my\hls\gulpfile.babel.js
[17:24:50] Starting 'jedy'...
[17:24:52] Starting 'svg-png'...
[17:24:53] Starting 'styles'...
[17:24:56] Starting 'scripts'...
[17:24:56] Starting 'fonts'...
[17:24:57] Finished 'svg-png' after 4.14 s
[17:24:57] Starting 'svg-sprite'...
[17:24:58] Finished 'fonts' after 2.17 s
[17:24:58] Finished 'svg-sprite' after 1.8 s

So it hangs on the compilation of .jade, .scss, .js files.
If they are removed, the problem is solved.
It is noteworthy that on another project with the same folder structure - there is no such problem.