This did it for me (UE 5.2.1), thanks my guy. I recommend trying this one out before deleting anything.
This line of code in your source build is used to display a message in the Output log in the bottom of the engine. From what I am seeing in this thread is that it is due to using a newer version of unreal engine and trying to use a ulog. The instructor in my course is using unreal engine 5.0 launch with a ue4 snippets extension that may or may not be updated to the newest versions of unreal engine C++. So I would search your source code for ulogs and maybe rewove them. I will post an update once I hear back from my instructor.
