Hello together,
i have finally installed icinga2 and icingaweb2 on an Ubuntu 20 Server (following this manual https://techexpert.tips/de/icinga2-de/icinga2-installation-auf-ubuntu-linux/). It all works fine, not Errors and all seems to be ok.
But after generating the “setup token” i tried to open the Website but get this error-message:
Fatal error : Uncaught ErrorException: Uncaught ErrorException: include(): \Icinga\Web\ViewStream::stream_set_option is not implemented! in /usr/share/php/Icinga/Web/View.php:262 Stack trace: #0 /usr/share/php/Icinga/Web/View.php(262): Icinga\Application\ApplicationBootstrap->Icinga\Application{closure}() #1 /usr/share/php/Icinga/Web/View.php(262): include() #2 /usr/share/icingaweb2/library/vendor/Zend/View/Abstract.php(877): Icinga\Web\View->_run() #3 /usr/share/icingaweb2/library/vendor/Zend/Controller/Action/Helper/ViewRenderer.php(904): Zend_View_Abstract->render() #4 /usr/share/icingaweb2/library/vendor/Zend/Controller/Action/Helper/ViewRenderer.php(925): Zend_Controller_Action_Helper_ViewRenderer->renderScript() #5 /usr/share/icingaweb2/library/vendor/Zend/Controller/Action/Helper/ViewRenderer.php(964): Zend_Controller_Action_Helper_ViewRenderer->render() #6 /usr/share/icingaweb2/library/vendor/Zend/Controller/Action/HelperBroker.php(272): Zend_Controller_Action_Helper_ViewRenderer->postDispatch() #7 /usr/share/icin in /usr/share/icingaweb2/library/vendor/Zend/Controller/Plugin/Broker.php on line 259/>
I am not realy into linux und icinga, but i have to install this… 
Anyone can help with that? What should i do, to get the Icinga-Web-Installation-Page to finisch the installation?
Thank you very much for the help.
