I started having a 500 Server Error in Magento's configuration page. The rest of the website works ok. I turned DeveloperMode on and I got the following message:
Method "addJqueryLibrary" is not defined in "Magentothem_Upsellslider_Model_Layout_Generate_Observer"
#0 /home/webiste/public_html/app/code/core/Mage/Core/Model/App.php(1340): Mage::throwException('Method "addJque...')
#1 /home/webiste/public_html/app/code/core/Mage/Core/Model/App.php(1317): Mage_Core_Model_App->_callObserverMethod(Object(Magentothem_Upsellslider_Model_Layout_Generate_Observer), 'addJqueryLibrar...', Object(Varien_Event_Observer))
#2 /home/webiste/public_html/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array)
#3 /home/webiste/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(351): Mage::dispatchEvent('controller_acti...', Array)
#4 /home/webiste/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(269): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#5 /home/webiste/public_html/app/code/core/Mage/Adminhtml/Controller/Action.php(275): Mage_Core_Controller_Varien_Action->loadLayout(NULL, true, true)
#6 /home/webiste/public_html/app/code/core/Mage/Adminhtml/controllers/System/ConfigController.php(95): Mage_Adminhtml_Controller_Action->loadLayout()
#7 /home/webiste/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Adminhtml_System_ConfigController->editAction()
#8 /home/webiste/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('edit')
#9 /home/webiste/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#10 /home/webiste/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#11 /home/webiste/public_html/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#12 /home/webiste/public_html/index.php(87): Mage::run('', 'store')
#13 {main}
Any body seen this before of know how to fix it?
Best Answer
Looks like this has been discussed on StackOverflow
Magento empty blank product page
The accepted answer reads:
It looks like the module
Magentothem Upsellslider
is broken. If you installed the module from somewhere else, contact the creator and tell them it isn't working. In the meantime, uninstall it by removing the fileapp/code/etc/modules/Magentothem_Upsellslider.xml
and clear your cache.If this is your module, you seem to be trying to call a non-existent function
addJqueryLibrary
in your observer. Perhaps you have a typo... should it beaddJQueryLibrary
?