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Warning: require_once(/course/lib.php): Failed to open stream: No such file or directory in C:\laragon\www\smartlearn\index.php on line 31

Fatal error: Uncaught Error: Failed opening required '/course/lib.php' (include_path='.;C:/laragon/etc/php/pear') in C:\laragon\www\smartlearn\index.php:31 Stack trace: #0 {main} thrown in C:\laragon\www\smartlearn\index.php on line 31