Qt Creator is being uncooperative

I’m a student in a UAS program, and my group was tasked with making some minor edits to QGroundControl’s interface. After following the development guide to the best of our ability and pulling the latest source code via the Git terminal, we cannot seem to get Qt Creator to recognize any of the Qt kits we’ve installed as suitable. We made sure to use Qt 6.8.3, installed all the Additional Libraries, and have not had any success yet. Has anyone else had a similar issue, and if so, how were you able to resolve it?

Firstly, are you going to build on top of the current stable (v4.4.x) interface or the new v5 (master branch) interface? The latter one is built on top of Qt 6 while the former is still on Qt5.

In terms of how to build, the general advice is to check and replicate the CI build in .github/workflows as that’s the current source of truth: