XF 2.0 Errors in Server Error Log - source? fix?

[djbaxter]

I have a bunch of these in the server error log:

    ErrorException: [E_NOTICE] Undefined index: url src/XF/Mvc/Entity/AbstractCollection.php:44

    Generated by: Unknown account Aug 17, 2018 at 10:31 PM

Stack trace

#0 src/XF/Mvc/Entity/AbstractCollection.php(44): XF::handlePhpError(8, 'Undefined index...', '/home/bizwarri/...', 44, Array)
#1 src/addons/KL/EditorManager/XF/BbCode/Renderer/Html.php(272): XF\Mvc\Entity\AbstractCollection->offsetGet('url')
#2 src/XF/BbCode/Traverser.php(54): KL\EditorManager\XF\BbCode\Renderer\Html->renderTag(Array, Array)
#3 src/XF/BbCode/Traverser.php(30): XF\BbCode\Traverser->renderSubTree(Array, Array)
#4 src/XF/BbCode/Traverser.php(18): XF\BbCode\Traverser->renderAst(Array, Object(KL\EditorManager\XF\BbCode\RuleSet), Array)
#5 src/XF/Pub/View/Forum/Rss.php(83): XF\BbCode\Traverser->render('I have a questi...', Object(XF\BbCode\Parser), Object(KL\EditorManager\XF\BbCode\RuleSet), Array)
#6 src/XF/Mvc/Renderer/AbstractRenderer.php(77): XF\Pub\View\Forum\Rss->renderRss()
#7 src/XF/Mvc/Renderer/Xml.php(74): XF\Mvc\Renderer\AbstractRenderer->renderViewObject('XF:Forum\\Rss', '', Array)
#8 src/XF/Mvc/Dispatcher.php(332): XF\Mvc\Renderer\Xml->renderView('XF:Forum\\Rss', '', Array)
#9 src/XF/Mvc/Dispatcher.php(303): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Rss), Object(XF\Mvc\Reply\View))
#10 src/XF/Mvc/Dispatcher.php(44): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'rss')
#11 src/XF/App.php(1931): XF\Mvc\Dispatcher->run()
#12 src/XF.php(328): XF\App->run()
#13 index.php(13): XF::runApp('XF\\Pub\\App')
#14 {main}

Request state

array(4) {
  ["url"] => string(25) "/forum/forums/-/index.rss"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

Can anyone tell me what's causing this and how to fix it?

 

[S Thomas]

https://xenforo.com/community/resources/editor-bb-code-manager.5657/updates#resource-update-27310

 

[djbaxter]

Oh okay. I've already updated that addon. That may explain why the errors stopped. The last entry was late Friday night.

Thank you.