( ! ) Warning: Attempt to read property "libdir" on null in C:\wamp64\www\question\bank\usage\classes\tables\question_usage_table.php on line 20
Call Stack
#	Time	Memory	Function	Location
1	0.0016	368648	{main}( )	...\question_usage_table.php:0

( ! ) Warning: require_once(/tablelib.php): Failed to open stream: No such file or directory in C:\wamp64\www\question\bank\usage\classes\tables\question_usage_table.php on line 20
Call Stack
#	Time	Memory	Function	Location
1	0.0016	368648	{main}( )	...\question_usage_table.php:0

( ! ) Fatal error: Uncaught Error: Failed opening required '/tablelib.php' (include_path='.;C:\php\pear') in C:\wamp64\www\question\bank\usage\classes\tables\question_usage_table.php on line 20
( ! ) Error: Failed opening required '/tablelib.php' (include_path='.;C:\php\pear') in C:\wamp64\www\question\bank\usage\classes\tables\question_usage_table.php on line 20
Call Stack
#	Time	Memory	Function	Location
1	0.0016	368648	{main}( )	...\question_usage_table.php:0