The trailing slash is important.ProxyPass / https://192.168.123.3:8443/share>This is telling Apache to strip off the slash when it does the proxy. This is probably not what you want to do.I removed the trailing slash
>What URL are you using to access this vhost?>If you want to access https://example.com/share/ and have that hit the proxy, you would need to make the proxy configProxyPass /share/ https://192.168.123.3:8443/share/