After installing a theme I get this error:
Warning: require(C:\xampp\htdocs\org1/wp-includes/post.php): failed to open stream: No such file or directory in C:\xampp\htdocs\org1\wp-settings.php on line 166
Fatal error: require(): Failed opening required 'C:\xampp\htdocs\org1/wp-includes/post.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\org1\wp-settings.php on line 166
I can't access any page (at least dashboard), how to fix it?