Are you working on a C++ project or only BP?
Are you using the compiled version of the engine or the normal one?
Anyway this issue is related with the compile of the engine itself.
You can try to make a normal package (that will compile the engine too) and then try again with the Launcher.
Otherwise, you can make a custom “Launch profile” in which you can set “Build” to true.
I had this same issue when i tried to launch my project on different targets (Consoles for example).