Shell theorem vs. Black hole

From: Khattak <zarmewa@xxxxxxxxx>
Date: Mon, 29 Jun 2009 18:23:21 -0700 (PDT)

Shell theorem http://en.wikipedia.org/wiki/Shell_theorem

If the body is a spherically symmetric shell (i.e. a hollow ball), no
gravitational force is exerted by the shell on any object inside,
regardless of the object's location within the shell.

Black hole http://en.wikipedia.org/wiki/Black_hole
In general relativity, a black hole is a region of space in which the
gravitational field is so powerful that nothing, including light, can
escape its pull

“As ring is also treated as shell in math/physics”

So can I ask a question why is there disagreement?
.

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