I have installed Certbot on two different Raspberry PI running Raspbian with Apache 2. On the first one (Raspbeery PI 3) everything works fine. Certbot dialog opens up, and I can enter my domain names, and I get a certificate. Everything works fine.
But on my second Rasp, Certbot just terminates silently after a few seconds. The Raspbian installation are basically the same on both systems.
Any idea how to solve this problem?