Warning: Undefined array key "HTTP_REFERER" in /www/doc/www.hotelstars.cz/www/Grace/Core/Document/JS/JS.php on line 52

Fatal error: Uncaught TypeError: Core\Document\Environment\Url::LoadVars(): Argument #1 ($link) must be of type string, null given, called in /www/doc/www.hotelstars.cz/www/Grace/Core/Document/JS/JS.php on line 52 and defined in /www/doc/www.hotelstars.cz/www/Grace/Core/Document/Environment/Url.php:116 Stack trace: #0 /www/doc/www.hotelstars.cz/www/Grace/Core/Document/JS/JS.php(52): Core\Document\Environment\Url->LoadVars(NULL) #1 /www/doc/www.hotelstars.cz/www/Grace/Core/Document/JS/JS.php(32): Core\Document\JS\JS->InitEnvironment() #2 /www/doc/www.hotelstars.cz/www/Grace/Core/Document/Main.php(193): Core\Document\JS\JS->__construct(Object(Core\Document\Main), Object(Projects\Hotelstars\Features\Document\Document)) #3 /www/doc/www.hotelstars.cz/www/Grace/Core/Document/Main.php(70): Core\Document\Main->LoadJs() #4 /www/doc/www.hotelstars.cz/www/Grace/index.php(6): Core\Document\Main->Show() #5 /www/doc/www.hotelstars.cz/www/index.php(17): include('/www/doc/www.ho...') #6 {main} thrown in /www/doc/www.hotelstars.cz/www/Grace/Core/Document/Environment/Url.php on line 116