Error: spawn bundle ENOENT

[metapodcod]

gulp
[20:33:08] Using gulpfile ~\Desktop\Metapod\gulpfile.js
[20:33:08] Starting 'default'...
[20:33:08] Starting 'styles'...
[20:33:08] Starting 'watchMarkup'...
[20:33:08] Starting 'watchStyles'...
[20:33:08] Finished 'styles' after 177 ms
[20:33:08] Starting 'jekyllDev'...
[20:33:08] 'jekyllDev' errored after 4.41 ms
[20:33:08] Error: spawn bundle ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:269:19)
    at onErrorNT (internal/child_process.js:467:16)
    at processTicksAndRejections (internal/process/task_queues.js:82:21)
[20:33:08] 'default' errored after 186 ms

windows 10
gulp --version

CLI version: 2.3.0
Local version: 4.0.2

node --version
v14.17.0

jekyll --version

jekyll 4.2.0

edit :
This is how I solved my problem, but I'm not sure if I did it right. 🔢

gulfile.js https://github.com/SingaporeCSS/singaporecss.github.io/blob/master/gulpfile.js#L7 changed to
var cp = require('cross-spawn')