The editor will unpack some tools to a folder (see path in your original message). It seems like the folder remained but its contents was removed. This could possibly mean that the editor thinks it has all the unpacked files it needs, but when it is building it needs luajit-64 to compile Lua to bytecode and it fails because the file is missing. One way to solve it would be to remove the “unpack” folder to trigger the editor to unpack the files again.