I have just updated zabbix server 2.2.3 to zabbix 3.4.1. But I encounter bugs on the dashbord.

• I have a graphical bug. the green color is not displayed on tables.

• And I have this error when I want to customize my dashboard.

Undefined index: name [index.php:22 ? require_once() ? ZBase->run() ? ZBase->processRequest() ? CController->run() ? CControllerDashbrdWidgetUpdate->doAction() ? CController->getInput() in include/classes/mvc/CController.php:205]

Invalid parameter "/1/name": a character string is expected.