Fixed Error When Deleting An Event

Just got this last night.

• InvalidArgumentException: Accessed unknown getter 'article_id' on XenAddons\Sportsbook:EventItem[8]
  
• src/XF/Mvc/Entity/Entity.php:203

• Generated by: gobigred
  
• Aug 28, 2020 at 3:57 PM

Stack trace
#0 src/XF/Mvc/Entity/Entity.php(110): XF\Mvc\Entity\Entity->get('article_id')
#1 src/addons/XenAddons/Sportsbook/Entity/EventItem.php(1158): XF\Mvc\Entity\Entity->__get('article_id')
#2 src/XF/Mvc/Entity/Entity.php(1648): XenAddons\Sportsbook\Entity\EventItem->_postDelete()
#3 src/addons/XenAddons/Sportsbook/Service/EventItem/Delete.php(63): XF\Mvc\Entity\Entity->delete()
#4 src/addons/XenAddons/Sportsbook/Pub/Controller/EventItem.php(1185): XenAddons\Sportsbook\Service\EventItem\Delete->delete('hard', '')
#5 src/XF/Mvc/Dispatcher.php(350): XenAddons\Sportsbook\Pub\Controller\EventItem->actionDelete(Object(XF\Mvc\ParameterBag))
#6 src/XF/Mvc/Dispatcher.php(257): XF\Mvc\Dispatcher->dispatchClass('XenAddons\\Sport...', 'Delete', Object(XF\Mvc\RouteMatch), Object(XenAddons\Sportsbook\Pub\Controller\EventItem), NULL)
#7 src/XF/Mvc/Dispatcher.php(113): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(XenAddons\Sportsbook\Pub\Controller\EventItem), NULL)
#8 src/XF/Mvc/Dispatcher.php(55): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#9 src/XF/App.php(2298): XF\Mvc\Dispatcher->run()
#10 src/XF.php(464): XF\App->run()
#11 index.php(20): XF::runApp('XF\\Pub\\App')
#12 {main}
Request state
array(4) {
["url"] => string(25) "/sportsbook/test.8/delete"
["referrer"] => string(43) "https://hooplanation.com/sportsbook/test.8/"
["_GET"] => array(0) {
}
["_POST"] => array(5) {
["hard_delete"] => string(1) "1"
["_xfToken"] => string(8) "********"
["_xfRequestUri"] => string(19) "/sportsbook/test.8/"
["_xfWithData"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}
}