Deprecated: Optional parameter $level declared before required parameter $message is implicitly treated as a required parameter in /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Common.php on line 350

Deprecated: Optional parameter $level declared before required parameter $msg is implicitly treated as a required parameter in /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/libraries/Log.php on line 72

Deprecated: Optional parameter $line declared before required parameter $params is implicitly treated as a required parameter in /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Lang.php on line 169
<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  session_start(): Session cannot be started after headers have already been sent</p>
<p>Filename: libraries/OwnSession.php</p>
<p>Line Number: 24</p>

</div><div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  Cannot modify header information - headers already sent by (output started at /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Common.php:350)</p>
<p>Filename: libraries/Session.php</p>
<p>Line Number: 674</p>

</div><div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  Undefined global variable $_SESSION</p>
<p>Filename: libraries/OwnSession.php</p>
<p>Line Number: 88</p>

</div>
Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, null given in /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/application/libraries/OwnSession.php:88
Stack trace:
#0 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/application/libraries/User.php(36): OwnSession->getData('u')
#1 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/application/libraries/User.php(30): User->_ensureLoginOnInit()
#2 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Loader.php(1144): User->__construct()
#3 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Loader.php(1019): CI_Loader->_ci_init_class('user', '', NULL, NULL)
#4 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Loader.php(216): CI_Loader->_ci_load_class('User', NULL, NULL, true)
#5 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Loader.php(1239): CI_Loader->library('user')
#6 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Loader.php(152): CI_Loader->_ci_autoloader()
#7 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/Controller.php(51): CI_Loader->initialize()
#8 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/system/core/CodeIgniter.php(308): CI_Controller->__construct()
#9 /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/index.php(247): require_once('/home/httpd/vho...')
#10 {main}
  thrown in /home/httpd/vhosts/florianmueller.me/httpdocs/awesumgrades.ch/beta/docroot/application/libraries/OwnSession.php on line 88