Stuck on en-gb-undefined.json missing

Hi All,

Just started to dive in to the world of HA Development. I forked the FrontEnd and am working in a DevContainer. From there I started the HA Core and I am able to reach this via localhost port 8124.

But I dont have any translations. There is an error which says:

GET http://localhost:8124/static/translations/page-authorize/en-GB-undefined.json 404 (Not Found)

When I comment out to line development_repo the translations are back, but I dont have my changes which I made in the frontend.

Does anyone have an idea what I am missing?

Thanks,
Ronald