I am surprised that WRI never checks previous examples before shipping new versions. The following example is mentioned and highlighted on the webpage. It does not work in 12.1.1.0 and as far as I remember it used to work in older version 12.0 perhaps. Does someone else has trouble running this example with a fresh kernel. I have filed a bug report nevertheless Case number 4696657
https://www.wolfram.com/language/12/convex-optimization/minimal-bounding-ellipsoid.html?product=mathematica
I get this output below:
