Hi, Are you able to share your [login to view URL] file? If you share the code, I will be able to solve the issue within a couple of hours or less.
Best your wishes!
p.s: It seems that Storyboard does make a use of webpack and webpack doesn't allow us to use 'import' command to load asset files in Typescript while it is possible to do via Javascript. As I can see, now that you are using Typescript, you should use require instead of import. It's my private opinion. But let me know if it's helpful.