Hello again!
Awesome, progress has been made. Checking the new log, it states that more information can be found in the cook trace:
(see C:\Users\elyse\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.4\Log.txt for full exception trace)
Please send that log too, so we can pinpoint the cause. Additionally, there is one more line to check:
LogLauncherProfile: Unable to use promoted target - ../../../../../../Users/elyse/OneDrive/Documents/Unreal Projects/piratesPrototype/Binaries/Win64/UnrealGame.target does not exist.
This suggest a critical targer is missing, it could be just noise during the build, unless you are using the Multi-User plugin in your project, then that element could be taken by another session.
Please check that file in particular, and send the trace log, so we can continue investigating.