Easily fixable; your recipe is looking for forge:ingots/steelleaf
The tag used by twilight forest is actually forge:ingots/steeleaf (one L)
Therefore, the tag your recipe looks for is always empty, and will never load
This only makes me sad because I spent so much time trying to make sure this didn't happen and yet the time it mattered most I mispelt it :(. Will fix asap
Easily fixable; your recipe is looking for
forge:ingots/steelleaf
The tag used by twilight forest is actually
forge:ingots/steeleaf
(one L)Therefore, the tag your recipe looks for is always empty, and will never load