Fatal/Uncaught Error: Call to undefined function CodeIgniter\locale_set_default()

Fatal/Uncaught Error: Call to undefined function CodeIgniter\locale_set_default() - Printable Version

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Fatal/Uncaught Error: Call to undefined function CodeIgniter\locale_set_default() - blaasvaer - 09-03-2020

When I run:

Code:
$ php spark serve

I get:

Code:
Fatal error: Uncaught Error: Call to undefined function CodeIgniter\locale_set_default()

This is a clean and fresh installation done according to the docs ... any ideas what now broke?