Rendering : multiple lvl.dat files

It keeps saying that I have multiple lvl.dat files.
I tried it with three versions of the world always with another lvl.dat file in it.
It originally had three, and I tried the three of them, none work.

Please help me out with this, thank you.

You want to keep the level.dat that is in your main world save folder.

For Example:
Kingdom/level.dat

Any other ones that are in there can be removed.

*EDIT: Looks like you most recent upload rendered fine. I think you had it figured out!