Error message

• Warning: Use of undefined constant REQUEST_URI - assumed 'REQUEST_URI' (this will throw an Error in a future version of PHP) in eval() (line 2 of /var/www/html/web/modules/php/php.module(80) : eval()'d code).
• Warning: Use of undefined constant REQUEST_URI - assumed 'REQUEST_URI' (this will throw an Error in a future version of PHP) in eval() (line 2 of /var/www/html/web/modules/php/php.module(80) : eval()'d code).