( ! ) Fatal error: Uncaught Error: Class "plugin_renderer_base" not found in C:\wamp64\www\question\bank\previewquestion\classes\output\renderer.php on line 31
( ! ) Error: Class "plugin_renderer_base" not found in C:\wamp64\www\question\bank\previewquestion\classes\output\renderer.php on line 31
Call Stack
#	Time	Memory	Function	Location
1	0.0012	362928	{main}( )	...\renderer.php:0