Backtrace -->
#0 Piwik\Error::errorHandler(…) called at [/var/www/piwik.c6-berlin.com/plugins/BotTracker/API.php:88]
#1 Piwik\Plugins\BotTracker\API->getAllBotDataPie(…) called at [:]
#2 call_user_func_array(…) called at [/var/www/piwik.c6-berlin.com/core/API/Proxy.php:209]
#3 Piwik\API\Proxy->call(…) called at [/var/www/piwik.c6-berlin.com/core/API/Request.php:215]
#4 Piwik\API\Request->process(…) called at [/var/www/piwik.c6-berlin.com/core/ViewDataTable/Request.php:48]
#5 Piwik\ViewDataTable\Request->loadDataTableFromAPI(…) called at [/var/www/piwik.c6-berlin.com/core/Plugin/ViewDataTable.php:288]
#6 Piwik\Plugin\ViewDataTable->loadDataTableFromAPI(…) called at [/var/www/piwik.c6-berlin.com/core/Plugin/Visualization.php:166]
#7 Piwik\Plugin\Visualization->buildView(…) called at [/var/www/piwik.c6-berlin.com/core/Plugin/ViewDataTable.php:375]
#8 Piwik\Plugin\ViewDataTable->render(…) called at [/var/www/piwik.c6-berlin.com/plugins/BotTracker/Controller.php:76]
#9 Piwik\Plugins\BotTracker\Controller->getBotTrackerPie(…) called at [/var/www/piwik.c6-berlin.com/plugins/BotTracker/Controller.php:84]
#10 Piwik\Plugins\BotTracker\Controller->getBotTrackerPage(…) called at [:]
#11 call_user_func_array(…) called at [/var/www/piwik.c6-berlin.com/core/FrontController.php:500]
#12 Piwik\FrontController->doDispatch(…) called at [/var/www/piwik.c6-berlin.com/core/FrontController.php:85]
#13 Piwik\FrontController->dispatch(…) called at [/var/www/piwik.c6-berlin.com/core/dispatch.php:34]
#14 require_once(…) called at [/var/www/piwik.c6-berlin.com/index.php:47]