Error connecting to database - check your database connection properties in constants.php file

SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it.
PHP Version : 7.2.31

( ! ) Warning: PDO::prepare(): SQLSTATE[00000]: No error: PDO constructor was not called in D:\WEBROOT\admin\includes\Configs.php on line 15
Call Stack
#	Time	Memory	Function	Location
1	0.0025	400720	{main}( )	...\index.php:0
2	0.0045	401120	include( 'D:\WEBROOT\admin\includes\controller.php' )	...\index.php:2
3	1.0417	430120	Session->__construct( )	...\controller.php:25
4	1.0442	435128	Session->startSession( )	...\Session.php:37
5	1.0451	436200	Session->addActiveGuest( )	...\Session.php:78
6	1.0451	436200	Configs->getConfig( )	...\Session.php:515
7	1.0451	436200	prepare ( )	...\Configs.php:15

( ! ) Fatal error: Uncaught Error: Call to a member function execute() on null in D:\WEBROOT\admin\includes\Configs.php on line 16
( ! ) Error: Call to a member function execute() on null in D:\WEBROOT\admin\includes\Configs.php on line 16
Call Stack
#	Time	Memory	Function	Location
1	0.0025	400720	{main}( )	...\index.php:0
2	0.0045	401120	include( 'D:\WEBROOT\admin\includes\controller.php' )	...\index.php:2
3	1.0417	430120	Session->__construct( )	...\controller.php:25
4	1.0442	435128	Session->startSession( )	...\Session.php:37
5	1.0451	436200	Session->addActiveGuest( )	...\Session.php:78
6	1.0451	436200	Configs->getConfig( )	...\Session.php:515