Warning: require(./common.php): Failed to open stream: No such file or directory in /www/doc/lab1.shoc.cz/www/ucp.php on line 20

Fatal error: Uncaught Error: Failed opening required './common.php' (include_path='.:/usr/share/php') in /www/doc/lab1.shoc.cz/www/ucp.php:20 Stack trace: #0 {main} thrown in /www/doc/lab1.shoc.cz/www/ucp.php on line 20