Warning: require_once(richtexteditor/include_rte.php): failed to open stream: No such file or directory in C:\wwwroot\mwrsf\q&a\lib\header.php on line 6

Fatal error: require_once(): Failed opening required 'richtexteditor/include_rte.php' (include_path='.;C:\php\pear') in C:\wwwroot\mwrsf\q&a\lib\header.php on line 6