( ! ) Fatal error: Class 'Dataset' not found in C:\wamp64\www\components\dataset\query_dataset.php on line 6
Call Stack
#	Time	Memory	Function	Location
1	0.0017	264480	{main}( )	...\view_based_dataset.php:0
2	0.0036	303568	include_once( 'C:\wamp64\www\components\dataset\table_dataset.php' )	...\view_based_dataset.php:3
3	0.0133	715832	include_once( 'C:\wamp64\www\components\dataset\dataset.php' )	...\table_dataset.php:3
4	0.0179	895024	include_once( 'C:\wamp64\www\database_engine\engine.php' )	...\dataset.php:3
5	0.0338	1369512	include_once( 'C:\wamp64\www\database_engine\commands.php' )	...\engine.php:5
6	0.0418	1485048	include_once( 'C:\wamp64\www\components\error_utils.php' )	...\commands.php:6
7	0.0531	1895184	include_once( 'C:\wamp64\www\components\renderers\list_renderer.php' )	...\error_utils.php:4
8	0.0593	2245528	include_once( 'C:\wamp64\www\components\renderers\renderer.php' )	...\list_renderer.php:3
9	0.0731	3063112	include_once( 'C:\wamp64\www\components\grid\grid.php' )	...\renderer.php:3
10	0.0756	3090704	include_once( 'C:\wamp64\www\components\editors\editors.php' )	...\grid.php:5
11	0.1476	4231072	include_once( 'C:\wamp64\www\components\editors\cascading_combobox.php' )	...\editors.php:22
12	0.1496	4321920	include_once( 'C:\wamp64\www\components\editors\cascading_editor.php' )	...\cascading_combobox.php:3
13	0.1605	4981872	include_once( 'C:\wamp64\www\components\page\page.php' )	...\cascading_editor.php:6
14	0.2572	7458360	include_once( 'C:\wamp64\www\components\dataset\query_dataset.php' )	...\page.php:20