Error requesting resource on remote server. This could possible be related to a certificate mismatch

Hi,

I have installed OwnCloud at a Raspberry Pi where I use the calendar app. I have access to this OwnCloud from the internet. I have a second Raspberry where OwnCloud is installed, too. This installation is only for internal use but the calendar app is also installed. Both are in the same network.
I have one calendar that I like to synchronise on both OwnClouds. At the moment this calendar is only at the Raspberry that I can reach from the internet. At the second Raspberry I clicked on "New subscription" and used the Link that I copied from the calendar at the first Raspberry. But I get an error:

Error requesting resource on remote server. This could possible be related to a certificate mismatch

Any ideas what's wrong??

Hi,

as the message is telling you this is most likely an issue with the certificate on your devices. Check your SSL setup on both.