Manually upgrading from 2.10.4 to 2.12.6 inside Proxmox LXC - moving sqlite DB breaks application

[darrendavid]

I'm currently running nginxproxymanager 2.10.4 as an LXC under Proxmox, installed via tteck's wonderful scripts. Typically there is an update command inside the LXC to update the application, but sadly mine is broken. So, I've installed a fresh new LXC running NPM 2.12.6, but once I migrate my sqlite database over from my 2.10.4 install, the application breaks (can't connect via webui after restart). To be thorough, I'm moving over my entire /data and /etc/letsencrypt folders.

I've checked the NPM releases changelog and don't see anything obvious about this particular upgrade path. Is there anything I should know/do differently to make sure this upgrade works?