( ! ) Deprecated: optional(): Implicitly marking parameter $callback as nullable is deprecated, the explicit nullable type must be used instead in /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php on line 184
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.0347522832require( '/home/jexi/html/openeclass/vendor/autoload.php ).../init.php:48
50.0351522928ComposerAutoloaderInit711fc081b2d3458b804cd6dc260b26f0::getLoader( ).../autoload.php:22
60.0445597240{closure:/home/jexi/html/openeclass/vendor/composer/autoload_real.php:41-47}( $fileIdentifier = '72579e7bd17821bb1321b87411366eae', $file = '/home/jexi/html/openeclass/vendor/composer/../illuminate/support/helpers.php' ).../autoload_real.php:49

( ! ) Deprecated: with(): Implicitly marking parameter $callback as nullable is deprecated, the explicit nullable type must be used instead in /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php on line 375
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.0347522832require( '/home/jexi/html/openeclass/vendor/autoload.php ).../init.php:48
50.0351522928ComposerAutoloaderInit711fc081b2d3458b804cd6dc260b26f0::getLoader( ).../autoload.php:22
60.0445597240{closure:/home/jexi/html/openeclass/vendor/composer/autoload_real.php:41-47}( $fileIdentifier = '72579e7bd17821bb1321b87411366eae', $file = '/home/jexi/html/openeclass/vendor/composer/../illuminate/support/helpers.php' ).../autoload_real.php:49

( ! ) Deprecated: Sabre\Event\Loop\instance(): Implicitly marking parameter $newLoop as nullable is deprecated, the explicit nullable type must be used instead in /home/jexi/html/openeclass/vendor/sabre/event/lib/Loop/functions.php on line 173
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.0347522832require( '/home/jexi/html/openeclass/vendor/autoload.php ).../init.php:48
50.0351522928ComposerAutoloaderInit711fc081b2d3458b804cd6dc260b26f0::getLoader( ).../autoload.php:22
60.0473599360{closure:/home/jexi/html/openeclass/vendor/composer/autoload_real.php:41-47}( $fileIdentifier = 'd81bab31d3feb45bfe2f283ea3c8fdf7', $file = '/home/jexi/html/openeclass/vendor/composer/../sabre/event/lib/Loop/functions.php' ).../autoload_real.php:49

( ! ) Deprecated: phpCAS::client(): Implicitly marking parameter $sessionHandler as nullable is deprecated, the explicit nullable type must be used instead in /home/jexi/html/openeclass/vendor/apereo/phpcas/source/CAS.php on line 348
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.0347522832require( '/home/jexi/html/openeclass/vendor/autoload.php ).../init.php:48
50.0351522928ComposerAutoloaderInit711fc081b2d3458b804cd6dc260b26f0::getLoader( ).../autoload.php:22
60.0551601168{closure:/home/jexi/html/openeclass/vendor/composer/autoload_real.php:41-47}( $fileIdentifier = '344f11dc3484aaed5cbde58e23513be4', $file = '/home/jexi/html/openeclass/vendor/composer/../apereo/phpcas/source/CAS.php' ).../autoload_real.php:49

( ! ) Deprecated: phpCAS::proxy(): Implicitly marking parameter $sessionHandler as nullable is deprecated, the explicit nullable type must be used instead in /home/jexi/html/openeclass/vendor/apereo/phpcas/source/CAS.php on line 403
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.0347522832require( '/home/jexi/html/openeclass/vendor/autoload.php ).../init.php:48
50.0351522928ComposerAutoloaderInit711fc081b2d3458b804cd6dc260b26f0::getLoader( ).../autoload.php:22
60.0551601168{closure:/home/jexi/html/openeclass/vendor/composer/autoload_real.php:41-47}( $fileIdentifier = '344f11dc3484aaed5cbde58e23513be4', $file = '/home/jexi/html/openeclass/vendor/composer/../apereo/phpcas/source/CAS.php' ).../autoload_real.php:49

( ! ) Deprecated: CAS_Client::__construct(): Implicitly marking parameter $sessionHandler as nullable is deprecated, the explicit nullable type must be used instead in /home/jexi/html/openeclass/vendor/apereo/phpcas/source/CAS/Client.php on line 933
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.0347522832require( '/home/jexi/html/openeclass/vendor/autoload.php ).../init.php:48
50.0351522928ComposerAutoloaderInit711fc081b2d3458b804cd6dc260b26f0::getLoader( ).../autoload.php:22
60.0551601168{closure:/home/jexi/html/openeclass/vendor/composer/autoload_real.php:41-47}( $fileIdentifier = '344f11dc3484aaed5cbde58e23513be4', $file = '/home/jexi/html/openeclass/vendor/composer/../apereo/phpcas/source/CAS.php' ).../autoload_real.php:49
70.0627667216require( '/home/jexi/html/openeclass/vendor/apereo/phpcas/source/CAS.php ).../autoload_real.php:45
80.0635668560require_once( '/home/jexi/html/openeclass/vendor/apereo/phpcas/source/CAS/Autoload.php ).../CAS.php:257
90.0635668560class_exists( $class = 'CAS_Client' ).../Autoload.php:84
100.0635668632Composer\Autoload\ClassLoader->loadClass( $class = 'CAS_Client' ).../Autoload.php:84
110.0635668632{closure:/home/jexi/html/openeclass/vendor/composer/ClassLoader.php:575-577}( $file = '/home/jexi/html/openeclass/vendor/composer/../apereo/phpcas/source/CAS/Client.php' ).../ClassLoader.php:427

( ! ) Warning: session_start(): Session cannot be started after headers have already been sent in /home/jexi/html/openeclass/include/init.php on line 53
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.1096886480session_start( ).../init.php:53

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php:375) in /home/jexi/html/openeclass/include/init.php on line 77
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.1202997800header( $header = 'Content-Type: text/html; charset=UTF-8' ).../init.php:77

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php:375) in /home/jexi/html/openeclass/include/main_lib.php on line 3619
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.18382333816add_framebusting_headers( ).../init.php:619
50.19212501464header( $header = 'X-Frame-Options: SAMEORIGIN' ).../main_lib.php:3619

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php:375) in /home/jexi/html/openeclass/include/main_lib.php on line 3630
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.19212501464add_xxsfilter_headers( ).../init.php:621
50.19212501464header( $header = 'X-XSS-Protection: 1; mode=block' ).../main_lib.php:3630

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php:375) in /home/jexi/html/openeclass/include/main_lib.php on line 3640
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38
40.19222501464add_nosniff_headers( ).../init.php:623
50.19222501464header( $header = 'X-Content-Type-Options: nosniff' ).../main_lib.php:3640

( ! ) Warning: Undefined variable $langStickyNotes in /home/jexi/html/openeclass/include/init.php on line 680
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.0342522408require_once( '/home/jexi/html/openeclass/include/init.php ).../baseTheme.php:38

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /home/jexi/html/openeclass/vendor/illuminate/support/helpers.php:375) in /home/jexi/html/openeclass/include/baseTheme.php on line 102
Call Stack
#TimeMemoryFunctionLocation
10.0114442120{main}( ).../exercise_submit.php:0
20.0327511320require_once( '/home/jexi/html/openeclass/include/baseTheme.php ).../exercise_submit.php:29
30.19402610104header( $header = 'Location:https://hobit.noc.uoa.gr/openeclass/main/login_form.php?next=%2Fmodules%2Fexercise%2Fexercise_submit.php%3Flocalize%3Dde' ).../baseTheme.php:102