monitor:/etc/apache# ls /usr/lib/apache/1.3/mod_include.so
/usr/lib/apache/1.3/mod_include.so
monitor:/etc/apache# tail -n 1 modules.conf
LoadModule mod_include.c /usr/lib/apache/1.3/mod_include.so
monitor:/etc/apache# apachectl configtest
Syntax error on line 24 of /etc/apache/modules.conf:
Can't locate API module structure `mod_include.c' in file /usr/lib/apache/1.3/mod_include.so: /usr/lib/apache/1.3/mod_include.so: undefined symbol: mod_include.c