Error calling MortalityData[ ]?

Hello,

I try to call MortalityData[] from within Mathematica 12 and just receive the following error:

MortalityData::prec: Unable to locate paclet resources for MortalityData.

It doesn’t matter with which option I call it, e.g. a call of

MortalityData["Properties"]

Fails with the mentioned error.
Does anybody else experience this or knows how to fix it?
Other things e.g. HumanGrowthData[] work like expected.

Thanks and greetings.

Horst