I have the exact same problem after I transfer a server. It’s been happening since the past few days. Still looking for the solution.
I can delete the offending line and I did. The error message then went away. But I need to fix the root of the problem. I have many sites I need to transfer. So many nights just wasted.
AH00526: Syntax error on line 74 of /etc/apache2/sites-enabled/example.com.conf:
SSLCACertificateFile: file ‘/etc/ssl/virtualmin/169133753040921/ssl.ca’ does not exist or is empty
Action ‘configtest’ failed.
The Apache error log may have more information.
When I run ‘configtest’ in the terminal, it shows syntax OK
What is one to make out of this?