XF 2.0 Attempted to convert NULL to integer

[whassell20]

I am getting this error. Any help on resolving this matter?

Attempted to convert NULL to integer - src/XF/Mvc/Entity/ValueFormatter.php:141

Previous InvalidArgumentException: Attempted to convert NULL to integer - src/XF/Mvc/Entity/ValueFormatter.php:141
#0 src/XF/Mvc/Entity/Entity.php(687): XF\Mvc\Entity\ValueFormatter->castValueToType(NULL, 2, Array)
#1 src/XF/Mvc/Entity/Entity.php(575): XF\Mvc\Entity\Entity->_castValueToType(NULL, 'content_id', 2, Array)
#2 src/XF/Mvc/Entity/Entity.php(1314): XF\Mvc\Entity\Entity->set('content_id', NULL, Array)
#3 src/XF/Mvc/Entity/Entity.php(1301): XF\Mvc\Entity\Entity->_resolveDeferredValue('content_id', Object(XF\Mvc\Entity\DeferredValue), 'save')
#4 src/XF/Mvc/Entity/Entity.php(1109): XF\Mvc\Entity\Entity->_fillDeferredValues('save')
#5 src/addons/ThemeHouse/Covers/Entity/Cover.php(337): XF\Mvc\Entity\Entity->save()
#6 src/XF/Mvc/Entity/Entity.php(1248): ThemeHouse\Covers\Entity\Cover->_preSave()
#7 src/XF/Mvc/FormAction.php(51): XF\Mvc\Entity\Entity->preSave()
#8 src/XF/Mvc/FormAction.php(140): XF\Mvc\FormAction->XF\Mvc\{closure}(Object(XF\Mvc\FormAction))
#9 src/addons/ThemeHouse/Covers/Pub/Controller/Cover.php(156): XF\Mvc\FormAction->run()
#10 src/XF/Mvc/Dispatcher.php(249): ThemeHouse\Covers\Pub\Controller\Cover->actionStyle(Object(XF\Mvc\ParameterBag))
#11 src/XF/Mvc/Dispatcher.php(88): XF\Mvc\Dispatcher->dispatchClass('ThemeHouse\\Cove...', 'Style', 'json', Object(XF\Mvc\ParameterBag), '', Object(ThemeHouse\Covers\Pub\Controller\Cover), NULL)
#12 src/XF/Mvc/Dispatcher.php(41): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#13 src/XF/App.php(1931): XF\Mvc\Dispatcher->run()
#14 src/XF.php(329): XF\App->run()
#15 index.php(13): XF::runApp('XF\\Pub\\App')
#16 {main}

 

[Mike]

This appears to be related to the ThemeHouse covers add-on.