Why is gulp not finding the file?

Question

gulp.js

installed gulp .prescribing settings crashes error

C:\Users\Lenovo\Desktop\my files\my projects\Shop Site\fls-gulp>gulp
[03:29:40] Using gulpfile ~\Desktop\my files\my projects\Website Store\fls-gulp\gulpfile.js
[03:29:40] Starting 'default'...
[03:29:40] Starting 'watchFiles'...
[03:29:40] Starting 'browserSync'.. .
[03:29:40] Starting 'clean'...
[03:29:40] Finished 'clean' after 94 ms
[03:29:40] Starting 'css'...
[03:29:40] Starting 'html'...
[03:29:40] 'css' errored after 30 ms
[03:29:40] Error: File not found with singular glob: C:/Users/Lenovo/Desktop/my files/my projects/Shop website/fls-gulp/#src/scss/style.scss (if this was purposeful, use `allowEmpty` option)
at Glob. (C:\Users\Lenovo\Desktop\my files\my projects\Store Site\fls-gulp\node_modules\glob-stream\readable.js:84:17)
at Object.onceWrapper (events.js:422:26)
at Glob.emit (events.js:315:20)
at Glob.EventEmitter.emit (domain.js:486:12)
at Glob._finish (C:\Users\Lenovo\Desktop\my files\my projects\Shop Site \fls-gulp\node_modules\glob\glob.js:197:8)
at done (C:\Users\Lenovo\Desktop\my files\my projects\Shop Site\fls-gulp\node_modules\glob\glob.js: 182:14)
at Glob._processSimple2 (C:\Users\Lenovo\Desktop\my files\my projects\Store Site\fls-gulp\node_modules\glob\glob.js:688:12)
at C:\Users\Lenovo \Desktop\my files\my projects\Store Site\fls-gulp\node_modules\glob\glob.js:676:10
at Glob._stat2 (C:\Users\Lenovo\Desktop\my files\my projects\Store Site\fls-gulp\node_modules\glob\glob.js:772:12)
at lstatcb_ (C:\Users\Lenovo\Desktop \my files\my projects\Shop Site\fls-gulp\node_modules\glob\glob.js:764:12)
[03:29:40] 'default' errored after 148 ms

C:\Users\Lenovo\Desktop\my files\my projects\Shop website\fls-gulp>
here is the code: https://codepen.io/ilyaaa/pen/qBadRNp?editors=1010
here is the source video from the installation watch https://www.youtube.com/watch? v=stFOy0Noahg&t=1988s 38:26 ----39:44
Gulp throws an error and the dist folder disappears.