I assumed that those warning message is related with inner code of engine itself, and they are not harmful to my project. I had thinked those messages are something like communication message within teams or people in Unreal Engine development team. It is not clear, because I did not investigate codes of engine enough well. But If you make empty new project and follow below, that message will appeared. So I thought those are not related with my project, and those are not harmful.
- Make New Project with UE 5.03
- Make Some WBP asset and save.
- Check “Restore Open Asset Tabs On Restart”, in Editor Preferences → General - Loading & Saving.
- Close Editor with opened that WBP above.
- Open That Project again, and check warning message in console tab.
I think that warning message you saw is simmilar with my case. It is not clear as I said. But considering some possibility of like that will be not bad.
(In short, I think that it’s ok you ignore that.)