Title generator for Yandex

[ArgumentCountError] 
Too few arguments to function isPremiumAccount(), 0 passed in /home/c/ch16574/seo-title.ru/public_html/en/yandex/index.php on line 19 and exactly 1 expected (0)
/home/c/ch16574/seo-title.ru/public_html/local/php_interface/functions.php:1027
#0: isPremiumAccount()
	/home/c/ch16574/seo-title.ru/public_html/en/yandex/index.php:19
#1: include_once(string)
	/home/c/ch16574/seo-title.ru/public_html/bitrix/modules/main/include/urlrewrite.php:159
#2: include_once(string)
	/home/c/ch16574/seo-title.ru/public_html/bitrix/urlrewrite.php:2