Game files required to initialize the global shader library are missing from - Please make sure the game is installed correctly

[HonestDanGames]

You could just link my answer in this thread, rather than just copy and paste it:
Project crashing due to “missing game files” - Unreal Engine / Platform & Builds - Unreal Engine Forums

I just had this issue again when installing repo on a new device, and accidentally launching Development config in Visual Studio, instead of Development Editor.