I feel a bit silly, my Project Launcher custom profile wasn’t set to my game project, it must have not saved when I used version control or closed my project or something like that, because the launcher profile worked before so I obviously did have it set to my game project before.
I just had to point to my game project.
If people are wondering, it’s at the very top “Which project would you like to use?” and a dropdown menu where you find your game project’s .uproject file.