What is the meaning of Mark 8:17?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

Aware of their conversation, Jesus asked them, “Why are you debating about having no bread? Do you still not see or understand? Do you have such hard hearts?

Berean Standard Bible (BSB)

Jesus, perceiving it, said to them, “Why do you reason that it’s because you have no bread? Don’t you perceive yet, neither understand? Is your heart still hardened?

World English Bible (WEB)

And{G2532} when Jesus{G2424} knew{G1097}{(G5631)} it, he saith{G3004}{(G5719)} unto them{G846}, Why{G5101} reason ye{G1260}{(G5736)}, because{G3754} ye have{G2192}{(G5719)} no{G3756} bread{G740}? perceive ye{G3539}{(G5719)} not yet{G3768}, neither{G3761} understand{G4920}{(G5719)}? have ye{G2192}{(G5719)} your{G5216} heart{G2588} yet{G2089} hardened{G4456}{(G5772)}?

Strong's King James

(17) Aware, He said, "Why ponder about not having bread? Don't you see or understand, having a hardened, dull heart?"

The F.O.G*

[17] Aware of their confusion, Jesus addressed it directly: "Why are you so focused on having no bread? Don't you yet perceive or understand? Are your hearts too calloused to grasp spiritual truth?

The F.O.G Paraphrase

And Jesus having known, saith to them, ‘Why do ye reason, because ye have no loaves? do ye not yet perceive, nor understand, yet have ye your heart hardened?

Young's Literal Translation