ayg wrote:

It may take some time. How long does it stall for?

robchur wrote:

In computing, we have some operations which take up time. Shocking though it is
in this modern era of fast computing, multi-cored processors and billions of
concurrent operations, the solution is simple.

Sit back and have a cup of tea.

[On a more serious note, Simetrical added a warning that the operation can take
some time.]

Your long and my long might differ. Add progress indicators.