Our new Apache 2.0 intra web site is on NW6.5 SP7 server. We keep getting the following error when try to run the Perl 5.8 script in SYS:/APACHE2/cgi-bin/ folder:

Server error!
The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there was an error in a CGI script.
If you think this is a server error, please contact the webmaster.
Error 500

It genertated two entries in error_log.1423157868 in SYS:/APACHE2/logs/ folder:
[Tue Apr 08 11:07:47 2008] [error] [client] Could not find a command associated with the PL extension
[Tue Apr 08 11:07:47 2008] [error] [client] (4)Bad file number: don't know how to spawn child process: SYS:/apache2/cgi-bin/CONxxx.PL

We know it's not overloaded and there is no error in the Perl script because we are using the script on the current production server:Apache 1.0 on NW6.5 SP6.

Thank you for the help.