Error 1. When running the Unreal Editor, the following message occurs:
After closing this message and running the Unreal Editor again, it works normally. However, when launching the Unreal Engine once more, the same error occurs again (it works intermittently).
To resolve this symptom, I right-clicked the .uproject file and clicked “Generate Visual Studio project files,” but even after execution is complete and the window closes, the .sln file is not generated.