Visual Studio 2017: The command "gulp" exited with code 9009 - node.js

Question

Net App and my issue is when I hit Rebuild it throws an error: Visual Studio 2017: The command "gulp" exited with code 9009
Full log you can see [here][1]
The short story:
Everything worked fine until yesterday, where I was updating python from 2.x to python3.
After that my global variable $(PATH) became instead of C:\Program Files\nodejs => C:\python39\
I edited $(PATH) and put it again C:\Program Files\nodejs into my external tools:
https://i.imgur.com/HtQkAYW.png
I also add as second location of external tools my %AppData% folder for npm as you can see on the image above. I checked that folder and there is a gulp cmd file. So it should be recognizable.
However when I hit rebuild, I still have this error as I shown from my logs.
This is my package.json file:
{
"name": "testtest",
"version": "1.0.0",
"private": true,
"scripts": {
"css": "gulp"
},
"engines": {
"node": "5.9.1",
"npm": "3.7.3"
},
"devDependencies": {
"gulp": "^3.9.1",
"gulp-concat": "^2.6.0",
"gulp-htmlclean": "^2.7.22",
"gulp-less": "^3.1.0",
"gulp-minify-css": "^1.2.4",
"gulp-sourcemaps": "^2.3.0",
"gulp-uglify": "^2.1.2",
"gulp-util": "^3.0.7",
"merge-stream": "^1.0.0"
}
}
This is mine setup of npm version from cli:
{
gulp: '3.9.1',
npm: '6.14.6',
ares: '1.16.0',
brotli: '1.0.7',
cldr: '37.0',
http_parser: '2.9.3',
icu: '67.1',
llhttp: '2.1.2',
modules: '72',
napi: '6',
nghttp2: '1.41.0',
node: '12.18.4',
openssl: '1.1.1g',
tz: '2019c',
unicode: '13.0',
uv: '1.38.0',
v8: '7.8.279.23-node.39',
zlib: '1.2.11'
}
I tried different versions of nodejs (12.x.x and 10.x.x) I have same behavior.
[1]: https://pastebin.com/4srU2yB0