Hey there @badger_and_fox! Welcome to the community! As Ivan3z mentioned it’s likely that you have to add that module to your uproject file, so I’d give that a shot first.
However in a totally different vein, I’d recommend not keeping project files in a Onedrive handled folder. It first it seems very helpful, but it’s basically a form of unmanaged source control that updates itself somewhat randomly, and it takes one imperceptible misstep to break your project. If possible using a form of managed source control (like Git or Perforce) can save you so much grief in the rare event Onedrive ends up mangling some files.