Hey Austin,
Yes these files are in the 'custom' folder of theme (not in web by the way):
Do you think they belong in the 'web' folder of theme?
Kind regards,
Giel
I have a simular problem in Mendix 10.12.3.
I'm also getting 404 errors for missing files. but only after deployment of the application to a server. When I run the application from Studio Pro everything is working fine.
I unzipped the generated deployment package and it looks like the files are missing there. There's no "/web/widgets" directory in it,
When I try the same with a deployment package for a previous release of our application that was on Mendix 10.6.10, then I see a "web/widgets" folder in the deployment package.
So it looks like something is broken in 10.12.x I'll open a support ticket.