Understrap child theme JS not working in custom-javascript.js file

I'm developing a Wordpress custom theme using the child-theme of Understrap.

I'm adding my custom jQuery to child-theme src js custom-javascript.js, and the file is already commented with // Add your custom JS here. https://github.com/understrap/understrap-child/blob/main/src/js/custom-javascript.js

I did this as instructed from the Understrap Documentation:

Add your own JS to /src/js/custom-javascript.js to have them bundled into /js/child-theme.js. https://docs.understrap.com/#/understrap-child/npm

I've run the script in the console, and it works as intended, so the error is not with my script.

Yes, I have tried clearing my cache.

I've seen a few other questions related to needing to update a gulpfile.js, but no such file is included in my child OR parent theme, I have used the search function, and I also cannot find it on the Understrap GitHub repo.

Is the script not enqueuing properly? Have I missed something?

Thanks in advance.

EDIT: RESOLVED Was unable to find the source of the error. Ended up doing a fresh install of the Understrap child theme, and migrating my custom files over. This eventually resolved my problem and the JavaScript started working again.