Model collection resource name is not defined.after update

[berliozd]

Hi,
I have installed magento2 yesterday and after having updated it today i got now the following error while accessing the admin.

a:4:{i:0;s:46:"Model collection resource name is not defined.";i:1;s:5040:"#0 /var/www/magento2/lib/internal/Magento/Framework/Model/AbstractModel.php(285): Magento\Framework\Model\AbstractModel->getResourceCollection()
#1 /var/www/magento2/app/code/Magento/AdminNotification/Model/System/Message/Baseurl.php(71): Magento\Framework\Model\AbstractModel->getCollection()
#2 /var/www/magento2/app/code/Magento/AdminNotification/Model/System/Message/Baseurl.php(103): Magento\AdminNotification\Model\System\Message\Baseurl->_getConfigUrl()
#3 /var/www/magento2/lib/internal/Magento/Framework/Notification/MessageList.php(58): Magento\AdminNotification\Model\System\Message\Baseurl->getIdentity()
#4 /var/www/magento2/lib/internal/Magento/Framework/Notification/MessageList.php(84): Magento\Framework\Notification\MessageList->_loadMessages()
#5 /var/www/magento2/app/code/Magento/AdminNotification/Model/Resource/System/Message/Collection/Synchronized.php(24): Magento\Framework\Notification\MessageList->asArray()
#6 /var/www/magento2/lib/internal/Magento/Framework/Data/Collection/Db.php(566): Magento\AdminNotification\Model\Resource\System\Message\Collection\Synchronized->_afterLoad()
#7 /var/www/magento2/lib/internal/Magento/Framework/Data/Collection/Db.php(538): Magento\Framework\Data\Collection\Db->loadWithFilter(false, false)
#8 /var/www/magento2/lib/internal/Magento/Framework/Data/Collection.php(334): Magento\Framework\Data\Collection\Db->load()
#9 /var/www/magento2/app/code/Magento/AdminNotification/Block/System/Messages.php(46): Magento\Framework\Data\Collection->getItems()
#10 /var/www/magento2/lib/internal/Magento/Framework/View/Element/AbstractBlock.php(637): Magento\AdminNotification\Block\System\Messages->_toHtml()
#11 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(488): Magento\Framework\View\Element\AbstractBlock->toHtml()
#12 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(464): Magento\Framework\View\Layout->_renderBlock('system_messages')
#13 /var/www/magento2/var/generation/Magento/Framework/View/Layout/Interceptor.php(302): Magento\Framework\View\Layout->renderElement('system_messages', true)
#14 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(515): Magento\Framework\View\Layout\Interceptor->renderElement('system_messages')
#15 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(466): Magento\Framework\View\Layout->_renderContainer('notifications')
#16 /var/www/magento2/var/generation/Magento/Framework/View/Layout/Interceptor.php(302): Magento\Framework\View\Layout->renderElement('notifications', true)
#17 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(515): Magento\Framework\View\Layout\Interceptor->renderElement('notifications')
#18 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(466): Magento\Framework\View\Layout->_renderContainer('page.wrapper')
#19 /var/www/magento2/var/generation/Magento/Framework/View/Layout/Interceptor.php(302): Magento\Framework\View\Layout->renderElement('page.wrapper', true)
#20 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(515): Magento\Framework\View\Layout\Interceptor->renderElement('page.wrapper')
#21 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(466): Magento\Framework\View\Layout->_renderContainer('backend.page')
#22 /var/www/magento2/var/generation/Magento/Framework/View/Layout/Interceptor.php(302): Magento\Framework\View\Layout->renderElement('backend.page', true)
#23 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(515): Magento\Framework\View\Layout\Interceptor->renderElement('backend.page')
#24 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(466): Magento\Framework\View\Layout->_renderContainer('root')
#25 /var/www/magento2/var/generation/Magento/Framework/View/Layout/Interceptor.php(302): Magento\Framework\View\Layout->renderElement('root', true)
#26 /var/www/magento2/lib/internal/Magento/Framework/View/Layout.php(884): Magento\Framework\View\Layout\Interceptor->renderElement('root')
#27 /var/www/magento2/var/generation/Magento/Framework/View/Layout/Interceptor.php(588): Magento\Framework\View\Layout->getOutput()
#28 /var/www/magento2/lib/internal/Magento/Framework/View/Result/Page.php(241): Magento\Framework\View\Layout\Interceptor->getOutput()
#29 /var/www/magento2/lib/internal/Magento/Framework/View/Result/Layout.php(162): Magento\Framework\View\Result\Page->render(Object(Magento\Framework\App\Response\Http))
#30 /var/www/magento2/var/generation/Magento/Backend/Model/View/Result/Page/Interceptor.php(289): Magento\Framework\View\Result\Layout->renderResult(Object(Magento\Framework\App\Response\Http))
#31 /var/www/magento2/lib/internal/Magento/Framework/App/Http.php(119): Magento\Backend\Model\View\Result\Page\Interceptor->renderResult(Object(Magento\Framework\App\Response\Http))
#32 /var/www/magento2/lib/internal/Magento/Framework/App/Bootstrap.php(245): Magento\Framework\App\Http->launch()
#33 /var/www/magento2/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http))
#34 {main}";s:3:"url";s:108:"/index.php/admin/admin/dashboard/index/key/45a84c5dc5464b3c2e855f256f70f63d55d10bc571af4dcaa5e138d1d1e64c7c/";s:11:"script_name";s:10:"/index.php";}

[mazhalai]

@berliozd can you clear your var/generation folder and then try again? Possibly related to #1014

[henkelund]

I had the same issue. It seems there was a couple of new modules after the update and the object manager didn't load the correct arguments without them enabled.

php -f setup/index.php -- module-enable --modules=Magento_Config,Magento_Variable

After enabling the modules I was promted to run their update scripts:

php -f setup/index.php -- update

Unfortunately it tried to create a table I already had so I had to resort to:

DROP TABLE core_config_data;

After that I could run the update and get in to the backoffice again.
Hope this helps

[berliozd]

Thanks @mazhalai, I tried that but It didn't make anything good.
Thanks @henkelund, I did what you said and it fixed my problem.