( ! ) Fatal error: Uncaught Error: Undefined constant "MB_OVERLOAD_STRING" in C:\wamp64\www\abc\libraries\vendor\joomla\string\src\phputf8\utf8.php on line 38
( ! ) Error: Undefined constant "MB_OVERLOAD_STRING" in C:\wamp64\www\abc\libraries\vendor\joomla\string\src\phputf8\utf8.php on line 38
Call Stack
#	Time	Memory	Function	Location
1	0.0001	360384	{main}( )	...\index.php:0
2	0.0002	362720	require_once( 'C:\wamp64\www\abc\includes\framework.php )	...\index.php:41
3	0.0015	376216	require_once( 'C:\wamp64\www\abc\libraries\cms.php )	...\framework.php:23
4	0.0016	376664	require( 'C:\wamp64\www\abc\libraries\vendor\autoload.php )	...\cms.php:33
5	0.0016	376664	ComposerAutoloaderInit205c915b9c7d3e718e7c95793ee67ffe::getLoader( )	...\autoload.php:7
6	0.0017	377336	composerRequire205c915b9c7d3e718e7c95793ee67ffe( $fileIdentifier = '2fb9d6f23c8e8faefc193a4cde0cab4f', $file = 'C:\\wamp64\\www\\abc\\libraries\\vendor\\composer/../joomla/string/src/phputf8/utf8.php' )	...\autoload_real.php:56
7	0.0018	378080	require( 'C:\wamp64\www\abc\libraries\vendor\joomla\string\src\phputf8\utf8.php )	...\autoload_real.php:66