There's lot's of issues with current physics, mostly in cosmology. String Theory was partly invented to describe the interior of a black hole. The characteristics of the Higgs field are still unknown. Gravity is still not unified with the other forces, despite appearing to couple with everything. Our current best models for the formation of the universe predict huge amounts of invisible matter, and we have no idea what that could be, from new particles to microscopic black holes formed in the first nanoseconds of the universe, to reinterpretations of relativity. Those same models also predict that out universe is dominated by strange energy inherent to space itself, which has no basis in the Standard Model at all. I wouldn't call these perfectly fine answers.

And even if the nature of the interior of a black hole what the only issue, the final part of physics we haven't explained, I would say we've thought that before. About a century ago, the scientific community though they had mostly solved physics. The last big question was why ultraviolet light didn't extend out to infinite energy as predicted. Then photons happened and we discovered quantum physics.

At the close vicinity where they don't actually agree if it's inside or outside.