The issue is very nasty, and if it wasnt other person of my team to try in a different way It would be a blocker.
The issue:
I created a view and inside of it I created an item to fetch a git project, given jdk 1.8.
and the issue was the one above.
Full:
Your Oracle account doesn't appear valid. Please specify a valid username/password
ERROR: Unable to install JDK unless a valid username/password is provided.
Finished: FAILURE
My teammate tried for herself , but created the item right from the main view. This is, she didnt open the view were it was intended to show the item.
And it worked :/
I then opened the view where I wanted it to be shown and created a copy of her item inside of the view, just to find that it was failing with the same error.
Finally I just edited the view to show her item and it worked, but her item had the suffix "test" in it so I renamed the item in order to take that out. And Bam!
Stoped working again with the same error above.
very creepy bug you got here.
good luck