Are you sure? I just downloaded your repo, deleted package-lock.json, ran npm install and then, npm run build, I get the following:
> ddvdrivertraining@1.0.0 build C:\Users\Hrishikesh\Desktop\DDVDriverTraining-master
> gulp; hugo --gc --minify
[16:29:29] Using gulpfile ~\Desktop\DDVDriverTraining-master\gulpfile.js
[16:29:29] Task never defined: ;
[16:29:29] To list available tasks, try running: gulp --tasks
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! ddvdrivertraining@1.0.0 build: `gulp; hugo --gc --minify`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ddvdrivertraining@1.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Hrishikesh\AppData\Roaming\npm-cache\_logs\2020-10-24T10_59_29_976Z-debug.log