Packages not found

I try to reorgenice my packages but it failed. Packages were not resolved.

my old way in configuration.yaml

...
homeassistant:
  packages: !include_dir_merge_named integrations/

sensor vitocal: !include conf/vitocal.yaml
sensor kontakte: !include conf/kontakte.yaml
sensor temperatur: !include conf/temperatur.yaml
sensor cover: !include conf/cover.yaml
...

this worked!

So i tried to reorgenice to be more clear

...
homeassistant:

  packages:
    mqtts: !include_dir_merge_named integrations/mqtts/
    knx_int: !include_dir_merge_named integrations/knx_int/

    helfer_sensoren:
      sensor vitocal: !include conf/vitocal.yaml
      sensor kontakte: !include conf/kontakte.yaml
      sensor temperatur: !include conf/temperatur.yaml
      sensor cover: !include conf/cover.yaml      
...

but did not work.