CURL function not working

[LtB]

On Uniform Server Zero XV V15-0-2, I run geneaogical software TNG.

TNG throws this error message when I use a certain functionality:

[php:error] [pid 13456:tid 1984] [client 127.0.0.1:4875] PHP Fatal error:  Uncaught Error: Call to undefined function curl_init() in Z:\\UniServerZ\\www\\TNG\\geocodelib.php:169\nStack trace:\n#0 Z:\\UniServerZ\\www\\TNG\\geocodelib.php(109): get_file()\n#1 Z:\\UniServerZ\\www\\TNG\\geocodelib.php(12): geocode_osm()\n#2 Z:\\UniServerZ\\www\\TNG\\admin_addfamily.php(82): geocode()\n#3 {main}\n  thrown in Z:\\UniServerZ\\www\\TNG\\geocodelib.php on line 169, referer: http://localhost/TNG/admin_newfamily.php?husband=P9885&tree=tree1&cw=

The TNG Helpdesk suggested that

The "curl_init" function is part of PHP, not TNG, so your PHP may not be configured to support curl functions right now

 

In the info of PHP Version 8.3.0 under Module authors I read:  

Module Authors
Module	Authors
BC Math	Andi Gutmans
Bzip2	Sterling Hughes
Calendar	Shane Caraveo, Colin Viebrock, Hartmut Holzgraefe, Wez Furlong
COM and .Net	Wez Furlong
ctype	Hartmut Holzgraefe
cURL	Sterling Hughes
Date/Time Support	Derick Rethans   What must I do to get cURL working? Bribe mr Highes? 🙂

Edited May 28 by LtB
Sent incomplete...

[LtB]

I was lucky to find the page PHP Modules and Basics. Of the modules, cURL was not enabled so I placed a checkmark before it. 
I could continue working thereafter.
Today, after a fresh restart of the PC, I encountered the same error message: that curl_init() is not defined.
 

Quote

Uncaught Error: Call to undefined function curl_init() in Z:\\UniServerZ\\www\\TNG\\geocodelib.php:169\nStack trace:\n#0 Z:\\UniServerZ\\www\\TNG\\geocodelib.php(109): get_file()\n#1 Z:\\UniServerZ\\www\\TNG\\geocodelib.php(12): geocode_osm()\n#2 Z:\\UniServerZ\\www\\TNG\\admin_addfamily.php(82): geocode()\n#3 {main}\n  thrown in Z:\\UniServerZ\\www\\TNG\\geocodelib.php on line 169, referer: http://localhost/TNG/admin_newfamily.php?husband=P9901&tree=tree1&cw=1

Does that mean that enabling cURL was not sufficient? Must I add/download/configure something (You see, I am a complete ignorant)