Notice: Undefined index: datatable_row_limits (1 reply)

Hello,

today I was doing an upgrade to the current version 2.3.0 and after the update completed I got this error message:

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There is an error. Please report the message (Piwik 2.3.0) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Notice: Undefined index: datatable_row_limits in /path-to-piwik/PIWIK/core/Config.php on line 233

Backtrace -->

#0 Piwik\Error::errorHandler(...) called at [/path-to-piwik/PIWIK/core/Config.php:233]
#1 Piwik\Config->getDatatableRowLimits(...) called at [/path-to-piwik/PIWIK/core/Config.php:223]
#2 Piwik\Config->getClientSideOptions(...) called at [/path-to-piwik/PIWIK/core/Plugin/Controller.php:604]
#3 Piwik\Plugin\Controller->setBasicVariablesView(...) called at [/path-to-piwik/PIWIK/plugins/Login/Controller.php:109]
#4 Piwik\Plugins\Login\Controller->configureView(...) called at [/path-to-piwik/PIWIK/plugins/Login/Controller.php:96]
#5 Piwik\Plugins\Login\Controller->login(...) called at [/path-to-piwik/PIWIK/plugins/Login/Controller.php:61]
#6 Piwik\Plugins\Login\Controller->index(...) called at [:]
#7 call_user_func_array(...) called at [/path-to-piwik/PIWIK/core/FrontController.php:500]
#8 Piwik\FrontController->doDispatch(...) called at [/path-to-piwik/PIWIK/core/FrontController.php:85]
#9 Piwik\FrontController->dispatch(...) called at [/path-to-piwik/PIWIK/core/Plugin/Controller.php:810]
#10 Piwik\Plugin\Controller->redirectToIndex(...) called at [/path-to-piwik/PIWIK/plugins/CoreHome/Controller.php:56]
#11 Piwik\Plugins\CoreHome\Controller->redirectToCoreHomeIndex(...) called at [:]
#12 call_user_func_array(...) called at [/path-to-piwik/PIWIK/core/FrontController.php:500]
#13 Piwik\FrontController->doDispatch(...) called at [/path-to-piwik/PIWIK/core/FrontController.php:85]
#14 Piwik\FrontController->dispatch(...) called at [/path-to-piwik/PIWIK/core/dispatch.php:34]
#15 require_once(...) called at [/path-to-piwik/PIWIK/index.php:47]
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Any Idea how to fix it?

Regards
pascal