When updating Apache, or changing config, the httpd.conf build process ends with:
httpd: Syntax error in -C/-c directive: Syntax error on line 2 of /etc/apache2/conf.modules.d/275_mod_negotiation.conf:
It may also reference other shared object(*.so) files, but will end with the same "undefined symbol:" value.
This error is related to an issue with ea-apache24 updates that failed, as explained at Apache won't start after update to ea-apache24-2.4.46, regarding case EA-9238.
To resolve this error, reinstall ea-apache24 with yum:
yum install ea-apache24
Then verify that the configuration can be rebuilt without further error: