Fatal error: Uncaught Error: Class "Dflydev\PlaceholderResolver\AbstractPlaceholderResolver" not found in C:\Apache24\htdocs\cms_upgrade\vendor\dflydev\placeholder-resolver\src\Dflydev\PlaceholderResolver\RegexPlaceholderResolver.php:16 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\dflydev\placeholder-resolver\src\Dflydev\PlaceholderResolver\RegexPlaceholderResolver.php on line 16