When I want to upload a new screen-template, on the import side are several "Undefined index" errors on the button of the page.

**zabbix-url**/screen.import.php

Undefined index: httptests [screen.import.php:183 ? CView->render() ? include() in include/views/conf.import.php:55]
array_key_exists() expects parameter 2 to be array, null given [screen.import.php:183 ? CView->render() ? include() ? array_key_exists() in include/views/conf.import.php:55]
Undefined index: httptests [screen.import.php:183 ? CView->render() ? include() in include/views/conf.import.php:75]
array_key_exists() expects parameter 2 to be array, null given [screen.import.php:183 ? CView->render() ? include() ? array_key_exists() in include/views/conf.import.php:75]
Undefined index: httptests [screen.import.php:183 ? CView->render() ? include() in include/views/conf.import.php:85]
array_key_exists() expects parameter 2 to be array, null given [screen.import.php:183 ? CView->render() ? include() ? array_key_exists() in include/views/conf.import.php:85]