Добрый день. подскажите как решить проблему . при запуске сайта выскакивает такое сообщение.
Requirements problem
The following error must be resolved before you can continue the installation process:
The watchdog module is required but was not found. Please move it into the modules subdirectory.
The following installation warning should be carefully reviewed:
Operations on Unicode strings are emulated on a best-effort basis. Install the PHP mbstring extension for improved Unicode support.

кто сталкивался с таким?