[Mon Dec 16 08:05:33.208723 2019] [ssl:warn] [pid 3784:tid 256] AH01909: RSA certificate configured for www.example.com:443 does NOT include an ID which matches the server name
This clearly means there is a server name of xyz.example.com but the certificate is for the yyy.example.com only. In the current situation, while Apache will try to serve such certificate, but the browser s will not accept them when trying to access https://xyz.example.com, for instance.
So please try to install the newer version not latest version
1. Take backup of all databases and code
2. Uninstall the XAMPP
3. Install the newer version
That should fix your issue.