webalizer local, Error, file

longlong

设置webalizer.conf     
LogFile         /usr/local/apache2/logs/access_log
OutputDir       /usr/local/apache2/htdocs/loganalyze

执行webalizer指令 出现Error: Can't open log file /usr/local/apache2/logs/access_log
我看了下access_log的权限是755，到底怎么回事？