Why does Bitrix give an error when viewing news?

Question

1C-Bitrix

Bitrix. Corporate s1 Template From nexttype.
When going to the news page:
Example
gives the following error

Fatal error: Uncaught Error: Call to a member function IncludeComponent() on null in /home/c/cc28439/atlaslaser-bitrix/public_html/include/mainpage_catalog_slider.php:1 Stack trace: #0 /home/c/cc28439/atlaslaser-bitrix/public_html/bitrix/modules/main/include/urlrewrite.php(159): include_once() #1 /home/c/cc28439/atlaslaser-bitrix/public_html/bitrix/urlrewrite.php(2): include_once('/home/c/cc28439...') #2 {main} thrown in /home/c/cc28439/atlaslaser-bitrix/public_html/include/mainpage_catalog_slider.php on line 1

This was not the case before, and

Answer 1

Judging by the text of the error, the $APPLICATION global variable is not available in your /include/mainpage_catalog_slider.php file.