Warning: require(C:\websites\prov/wp-includes/functions.wp-scripts.php): failed to open stream: No such file or directory in C:\websites\prov\wp-includes\script-loader.php on line 31

Fatal error: require(): Failed opening required 'C:\websites\prov/wp-includes/functions.wp-scripts.php' (include_path='.;C:\php\pear') in C:\websites\prov\wp-includes\script-loader.php on line 31