Discord API 1.1.0

Error Type:
wcf\system\exception\ErrorException
Error Message:
Undefined index: user_name
File:
*/lib/system/WCF.class.php (313)
Stack Trace:
#0 */lib/system/event/listener/DiscordAuthListener.class.php (51):
wcf\system\WCF::handleError(8, 'Undefined index: user_name', '*/lib/system/event/listener/DiscordAuthListener.class.php', 51, [ 7 items ])
#1 */lib/system/event/EventHandler.class.php (228):
wcf\system\event\listener\DiscordAuthListener->execute(wcf\form\AccountManagementForm, 'wcf\\form\\AccountManagementForm', 'save')
#2 */lib/form/AbstractForm.class.php (96):
wcf\system\event\EventHandler->fireAction(wcf\form\AccountManagementForm, 'save')
#3 */lib/form/AccountManagementForm.class.php (309):
wcf\form\AbstractForm->save()
#4 */lib/form/AbstractForm.class.php (61):
wcf\form\AccountManagementForm->save()
#5 */lib/form/AbstractForm.class.php (112):
wcf\form\AbstractForm->submit()
#6 */lib/form/AccountManagementForm.class.php (258):
wcf\form\AbstractForm->readData()
#7 */lib/page/AbstractPage.class.php (276):
wcf\form\AccountManagementForm->readData()
#8 */lib/form/AccountManagementForm.class.php (302):
wcf\page\AbstractPage->show()
#9 */lib/page/AbstractPage.class.php (103):
wcf\form\AccountManagementForm->show()
#10 */lib/system/request/Request.class.php (83):
wcf\page\AbstractPage->__run()
#11 */lib/system/request/RequestHandler.class.php (94):
wcf\system\request\Request->execute()
#12 */index.php (9):
wcf\system\request\RequestHandler->handle('wcf')