Access gateway showing warning

Code:
Access Gateway startup log

   The last part of file rcnovell-apache2.out.pending contains errors. (99)Cannot assign requested address: AH00072: make_sock: could not bind to address 192.168.51.242:80 

no listening sockets available shutting down
AH00015: Unable to open logs

novell-apache2 script has thrown error message : Syntax OK
Starting Novell Gateway Service.....failed

see /var/log/novell-apache2/rcnovell-apache2.out for details

(Required Action)