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Call Stack
#	Time	Memory	Function	Location
1	0.0003	369560	{main}( )	.../index.php:0

( ! ) Notice: Undefined property: stdClass::$firstname in /var/www/moodle/my_dashboard/index.php on line 18
Call Stack
#	Time	Memory	Function	Location
1	0.0003	369560	{main}( )	.../index.php:0

( ! ) Notice: Undefined property: stdClass::$username in /var/www/moodle/my_dashboard/index.php on line 20
Call Stack
#	Time	Memory	Function	Location
1	0.0003	369560	{main}( )	.../index.php:0

( ! ) Notice: Trying to access array offset on value of type null in /var/www/moodle/my_dashboard/index.php on line 25
Call Stack
#	Time	Memory	Function	Location
1	0.0003	369560	{main}( )	.../index.php:0

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/moodle/my_dashboard/index.php:18) in /var/www/moodle/my_dashboard/index.php on line 28
Call Stack
#	Time	Memory	Function	Location
1	0.0003	369560	{main}( )	.../index.php:0
2	0.0163	1412544	header( $header = 'Location: https://lms.ueh.edu.vn/course/index.php?categoryid=' )	.../index.php:28