مشکل در برطرف نشدن ارور overlab در Appache error log (پاسخ داده نشده)

باسلام

زمانیکه میخوام پروژه html-beginnerرو طبق کلیپ های استاد انجام بدم ، این پروژه باز نمیشه و پروژه قبلی رو میاره

تنظیماتی که استاد توی کلیپ گفته رو هم انجام دادم اما بازم ارور های overlab از بین نمیره

این لیست ارورهاییه که تو آپاچی میده:

[Mon Dec 22 01:39:00 2014] [error] (OS 11001)No such host is known.  : Could not resolve host name *:80> -- ignoring!
[Mon Dec 22 01:39:00 2014] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
[Mon Dec 22 01:39:00 2014] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
[Mon Dec 22 01:39:00 2014] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
[Mon Dec 22 01:39:03 2014] [error] (OS 11001)No such host is known.  : Could not resolve host name *:80> -- ignoring!
[Mon Dec 22 01:39:03 2014] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
[Mon Dec 22 01:39:03 2014] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
[Mon Dec 22 01:39:03 2014] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
[Mon Dec 22 01:39:03 2014] [notice] Child 4356: Child process is running
[Mon Dec 22 01:39:03 2014] [notice] Child 4356: Acquired the start mutex.
[Mon Dec 22 01:39:03 2014] [notice] Child 4356: Starting 64 worker threads.
[Mon Dec 22 01:39:03 2014] [notice] Child 4356: Starting thread to listen on port 80.
[Mon Dec 22 01:39:03 2014] [notice] Child 4356: Starting thread to listen on port 80.

کسی هست که بتونه راهنمایی کنه؟