Homatic ccu1

Hi,
I want to integrate an old homematic ccu1 into homeassistant.
my configuration looks like this:

Loads default set of integrations. Do not remove.

default_config:

Load frontend themes from the themes folder

frontend:
themes: !include_dir_merge_named themes

automation: !include automations.yaml
script: !include scripts.yaml
scene: !include scenes.yaml

aus video

HomeMatic:
Interfaces:
Funk:
host: 192.168.X.X
port: 2001
resolvenames: “xml”
username: “xxx”
Password: “yyy”"
HMIP:
host: 192.168.x.x
port: 2010
resolvenames: “xml”
username: “xxx”
Password: “yyy”
Wired:
host: 192.168.x.x
port: 2000
resolvenames: “xml”
username: “xxx”
Password: “yyy”
groups:
host: 192.168.x.x
port: 9292
resolvenames: “xml”
username: “xxx”
Password: “yyy”
path: /groups
hosts:
ccu1:
host: 192.168.x.x
username: “xxx”
password: “yyy”

Seems ok, but I get a warning: “integration error: Homematic-Integration” not found.
I tried also with “json” instead of “xml”, but the error continues.
What did I do wrong?
Peter

I think by far the most users use Homematic_local from HACS.
The core HoneMatic integration was pretty much ditched by the HA devs, since it was far inferior to HoneMatic_local.