can't load root of wamp server (2 replies)

hi, i installed wamp server 3.0.6 on my windows 8.1 and everything worked perfect and i don't remember when this problem happen. i can't access to my root of wamp server location and any of my project. i using virtual directory for my projects.

so let me example my problem. when i try to access localhost:8282/ ( my wamp server) instead of index page i have list of all files. or if i try to access myproject:8282 i just got list of my files inside that project folder.

if i want to see index of localhost or any of my projects ,i have to add "index.php" at the end of url. like this "localhost:8282/index.php" or "myproject:8282/index.php" and index page load without problem.

i can access to my other link without problem, i mean i can go to "myproject:8282/art/1" without add "index.php" to my url.

i don't know this error related to my problem or not but when i load localhost:8282/index.php on bottom of page getting this error:

"The number of <Directory or </Directory> does not match the number of ServerName in c:/wamp/bin/apache/apache2.4.23/conf/extra/httpd-vhosts.conf file"

and here it is my wamp server details:

apache 2.423
php 5.6.25
mysql 5.7.14
and my wamp server is 32bit 3.0.6

i really appreciated for any help.