Latest git master: RPC error, luci/getFeatures object not found

Hello.
WRT1900AC v1 (mamba)

  1. I get this error with a build of latest git master (r16596). The error appears as a red bar above all luci pages. Some of the pages have aditional errors and won't load page contents.
    Is this a bug or is there something missing in my build?
    The usual suspects: luci-mod-rpc, ubox, ubus, ubusd, rpcd, rpcd-mod-* are all included in this build.
RPC call to luci/getFeatures failed with error -32000: Object not found
  at .handleCallReply (https://<ip:port>/luci-static/resources/rpc.js?v=git-21.113.40358-d66b5bb:11:1)
  1. Wifi doesn't work at all and there are two more wifi interfaces that I can't remove.

  2. Luci doesn't work without luci-mod-rpc, but that is not a dependency for luci-base.