I am building a magento B2B webshop
and now I cant do anything with it because of some error
a:5:{i:0;s:69:"Mage registry key "_singleton/rkt_jscssforsb/observer" already exists";i:1;s:3637:"#0 app/Mage.php(223): Mage::throwException('Mage registry k...')
#1 app/Mage.php(477): Mage::register('_singleton/rkt_...', false)
#2 app/code/core/Mage/Core/Model/App.php(1316): Mage::getSingleton('rkt_jscssforsb/...')
#3 app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('adminhtml_block...', Array)
#4 app/code/core/Mage/Adminhtml/Block/Template.php(80): Mage::dispatchEvent('adminhtml_block...', Array)
#5 app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Adminhtml_Block_Template->_toHtml()
#6 app/code/core/Mage/Adminhtml/Block/Dashboard/Diagrams.php(55): Mage_Core_Block_Abstract->toHtml()
#7 app/code/core/Mage/Core/Block/Abstract.php(293): Mage_Adminhtml_Block_Dashboard_Diagrams->_prepareLayout()
#8 app/code/core/Mage/Core/Model/Layout.php(456): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#9 app/code/core/Mage/Adminhtml/Block/Dashboard.php(66): Mage_Core_Model_Layout->createBlock('adminhtml/dashb...')
#10 app/code/core/Mage/Core/Block/Abstract.php(293): Mage_Adminhtml_Block_Dashboard->_prepareLayout()
#11 app/code/core/Mage/Core/Model/Layout.php(456): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#12 app/code/core/Mage/Core/Model/Layout.php(472): Mage_Core_Model_Layout->createBlock('adminhtml/dashb...', 'dashboard')
#13 app/code/core/Mage/Core/Model/Layout.php(239): Mage_Core_Model_Layout->addBlock('adminhtml/dashb...', 'dashboard')
#14 app/code/core/Mage/Core/Model/Layout.php(205): Mage_Core_Model_Layout->_generateBlock(Object(Mage_Core_Model_Layout_Element), Object(Mage_Core_Model_Layout_Element))
#15 app/code/core/Mage/Core/Model/Layout.php(210): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#16 app/code/core/Mage/Core/Controller/Varien/Action.php(344): Mage_Core_Model_Layout->generateBlocks()
#17 app/code/core/Mage/Core/Controller/Varien/Action.php(269): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#18 app/code/core/Mage/Adminhtml/Controller/Action.php(275): Mage_Core_Controller_Varien_Action->loadLayout(NULL, true, true)
#19 app/code/core/Mage/Adminhtml/controllers/DashboardController.php(40): Mage_Adminhtml_Controller_Action->loadLayout()
#20 app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Adminhtml_DashboardController->indexAction()
#21 app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('index')
#22 app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#23 app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#24 app/Mage.php(684): Mage_Core_Model_App->run(Array)
#25 index.php(87): Mage::run('', 'store')
#26 {main}";s:3:"url";s:81:"/Magento/index.php/ma_admin/dashboard/index/key/f1e58b7d15977224c929ac0010422f85/";s:11:"script_name";s:18:"/Magento/index.php";s:4:"skin";s:5:"admin";}
Best Answer
Your PHP developer should be able to solve the exact problem with this trace, but to explain the Problem:
You have an observer which calls
rkt_jscssforsb/observeras singleton (the default) but this model could not be loaded, so it savesfalsein the registry, which is not recognized by the next call of this singleton as it has the valuefalse, so it is tried again to call this singleton, but the registry does not allow to write a value, which already exist.Thats why you get the error message:
Mage registry key "_singleton/rkt_jscssforsb/observer" already existsAs you noted in your comment, you uninstalled a module, if this module had the name
rkt_jscssforsbyou should first try to clean the cache, maybe forcefully by deletemagento/var/cache/*or try to grep/search trough the code for the occurence of it to clean up the rest