mod-lsapi 1.1-81 on DirectAdmin server: undefined symbol: lscapi_set_criu_socket_path

Issue

Apache can't start after updating mod_lsapi on DirectAdmin server: 

# httpd -t
httpd: Syntax error on line 161 of /etc/httpd/conf/httpd.conf: 
Syntax error on line 7 of /etc/httpd/conf/extra/httpd-includes.conf: 
Syntax error on line 1 of /etc/httpd/conf/extra/mod_lsapi.conf: 
Cannot load /usr/lib/apache/mod_lsapi.so into server: /usr/lib/apache/mod_lsapi.so: 
undefined symbol: lscapi_set_criu_socket_path

Environment

• CloudLinux 9
• DirectAdmin
• mod_lsapi-1.1-81

Solution

1. Remove the following file:
   rm -rf /usr/local/directadmin/custombuild/cache/mod_lsapi-1.1-81.tar.gz
   
   

2. If you're upgrading mod_lsapi specifically, executing the following should be enough:

   # cd /usr/local/directadmin/custombuild
   # da build mod_lsapi
   # systemctl restart httpd

3. Otherwise, perform the usual installation steps for DirectAdmin:
   https://docs.cloudlinux.com/cloudlinuxos/cloudlinux_os_components/#installing-on-directadmin-servers