I am trying to move my configuration to using flakes with the nixflk template. However when I try to build this configuration I get the error.
```
error: --- TypeError --------------------------------------------------------------------- nix
at: (323:25) in file: /nix/store/vc3v85pjs6v04wn5w03z1b0mkl6r0p5q-source/lib/modules.nix
322|         foldl' (acc: module:
323|                 acc // (mapAttrs (n: v:
   |                         ^
324|                                    (acc.${n} or []) ++ f module v

value is a Boolean while a set was expected
```
I have no idea what that means. Can anybody help me?