while running gulp command it shows error

[GD-Dutta]

I'm using Mendix 8.6 version and node js 12x LTS and while running the command gulp in the terminal it shows error
PS C:\Users\Gayatree\test-widget\EnterToAction> gulp [11:59:53] Using gulpfile ~\test-widget\EnterToAction\gulpfile.js [11:59:53] Starting 'default'... [11:59:53] Starting 'build'... [11:59:53] Starting 'compress'... [11:59:53] Starting 'clean'... [11:59:53] Finished 'clean' after 16 ms [11:59:53] Starting '<anonymous>'... [11:59:53] Finished '<anonymous>' after 66 ms [11:59:53] Finished 'compress' after 101 ms [11:59:53] Finished 'build' after 120 ms [11:59:53] Starting '<anonymous>'... [11:59:53] '<anonymous>' errored after 3.3 ms [11:59:53] Error: watching ./src/**/*: watch task has to be a function (optionally generated by using gulp.parallel or gulp.series) at Gulp.watch (C:\Users\Gayatree\test-widget\EnterToAction\node_modules\gulp\index.js:31:11) at C:\Users\Gayatree\test-widget\EnterToAction\gulpfile.js:47:14 at bound (domain.js:419:14) at runBound (domain.js:432:12) at asyncRunner (C:\Users\Gayatree\test-widget\EnterToAction\node_modules\async-done\index.js:55:18) at processTicksAndRejections (internal/process/task_queues.js:76:11) [11:59:53] 'default' errored after 137 ms

@JelteMX
I need help sir.

[JelteMX]

I think this has to do with the gulp version, but I'm not sure. I might have some time to have a look next week