Yes, I have had this experience as well sometimes running into obscure engine bugs I have to work around. It does happen less in UE5 than UE4 from my experience but it can be difficult to track down if the logs don't have much info and a quick AI chat/search query cannot find. My best advice for that is to build early and often. I make sure to test a packaged build at the end of every major feature I add or at least once a week while working on my projects. At least then I have an idea of what I could have done that led to the packaged build error.