I don't have an answer to your question. On further inspection of my CA authority after applying the patch, I noticed that the private key was corrupted. I went back to my backup configuration files of a year ago, the private key was already corrupted. I went further back to 2 years ago, mysteriously, the cert part was corrupted while the private key was apparently intact. I pasted the private key of that configuration file to my current private key section and saved it. There was no error reported, maybe implying the private key is compatible with the cert of the CA authority. I am not knowledgeable enough to explain what happened.
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