Yesterday, automatic migration on my Turris 1.1 started. I have the same problem as sedlak.mila, router Web interface stopped work after migration. I checked lighttpd and I have got this error:
root@turris:~# lighttpd -f /etc/lighttpd/lighttpd.conf
Undefined config variable: var.home_dir
2021-12-02 08:05:32: (../src/configfile.c.2093) source: /etc/lighttpd/modules.d/30-webdav.load line: 25 pos: 49 parser failed somehow near here: +
2021-12-02 08:05:32: (../src/configfile.c.2093) source: /etc/lighttpd/lighttpd.conf line: 36 pos: 8 parser failed somehow near here: (EOL)
I tried to disable webdav module and web interface now works OK.