Thank you, very appreciated. I will happily test again with my broken plugins on 2.3.0b4. I noticed it does not only crash during the update process but also cause the same errors after the update if the packages are reinstalled/reenabled.
All in all it’s never too easy to update to a major or minor version (but that’s expected with betas). Patches are easy. But I got a lot of other problems and overcame most. I see some of them are already fixed on GitHub (such as the postfix plugin). Others I’m not sure if normal (for example SNMP uptimes had to be deleted and rediscovered to work for me, I see the plugin has been modified). Also got some other issues which I reported to the feedback email. I haven’t been able to make the new http plugin work but it looks promising, looking forward to make it work.