Razberry not reconized

[Pandabeer40]

Running on
Add-on version: 0.13.0
You are running the latest version of this add-on.
System: Home Assistant OS 5.13 (aarch64 / raspberrypi4-64)
Home Assistant Core: 2021.4.6
Home Assistant Supervisor: 2021.04.0

I don't see my razberry zwave module listed in the web-ui and if I if install the integration Z-Wave JS - and fill in: ws://a0xxxxxx-zwavejs2mqtt:3000 _ I get a message 'no connection'

log from supervisor:
[cont-init.d] 00-banner.sh: exited 0.
[cont-init.d] 01-log-level.sh: executing...
[cont-init.d] 01-log-level.sh: exited 0.
[cont-init.d] configuration.sh: executing...
[cont-init.d] configuration.sh: exited 0.
[cont-init.d] nginx.sh: executing...
[cont-init.d] nginx.sh: exited 0.
[cont-init.d] done.
[services.d] starting services
[services.d] done.
[15:50:40] INFO: Starting the Z-Wave JS to MQTT...

---

|___ / () |__ \ | | | |
/ / ____ ___ _____ _ ___ ) |_ __ ___ __ | || |_
/ /\ \ /\ / / \ \ / / _ \ / __| / /| '_ _ \ / ` | __| |
/ /\ V V / (| |\ V / _/ _ / /| | | | | | (| | || |_
/|_/_/ _,| _/ _| |/|| || ||_, |_|_|
/ | | |
|__/ ||
2021-04-26 15:50:41.725 WARN STORE: scenes.json not found
/bin/sh: git: not found
2021-04-26 15:50:48.862 INFO APP: Version: 3.5.0
2021-04-26 15:50:48.865 INFO APP: Application path:/opt
2021-04-26 15:50:49.104 INFO MQTT: MQTT is disabled
Logging to file:
/data/store/zwavejs_356.log
2021-04-26 15:50:49.168 INFO ZWAVE: Connecting to /dev/ttyAMA0
2021-04-26 15:50:49.263 INFO APP: Listening on port 44920 host 0.0.0.0 protocol HTTP
2021-04-26 15:50:49.312 INFO ZWAVE: Zwavejs usage statistics ENABLED
[15:50:49] INFO: Starting NGinx...
2021-04-26 15:51:25.401 INFO APP: GET / 304 53.359 ms - -
2021-04-26 15:51:25.440 INFO APP: GET /static/js/app.e73b34421653934249a9.js 304 9.335 ms - -
2021-04-26 15:51:25.448 INFO APP: GET /static/css/app.0a19f55522057b90e19b.css 304 2.518 ms - -
2021-04-26 15:51:25.806 INFO APP: GET /api/auth-enabled 304 14.030 ms - -
2021-04-26 15:51:26.049 INFO APP: GET /static/logo.png 304 2.192 ms - -
2021-04-26 15:51:26.175 INFO APP: GET /static/fonts/MaterialIcons-Regular.fa3334f.woff2 304 5.099 ms - -
2021-04-26 15:51:26.307 INFO APP: GET /api/settings 304 250.819 ms - -
2021-04-26 15:51:26.342 INFO APP: GET /api/auth-enabled 304 4.591 ms - -
2021-04-26 15:53:44.639 INFO APP: GET /health/zwave 200 4.255 ms - 1875
2021-04-26 15:55:44.653 INFO APP: GET /health/zwave 200 3.950 ms - 1875
2021-04-26 15:57:44.683 INFO APP: GET /health/zwave 200 3.285 ms - 1875
2021-04-26 15:58:42.024 INFO APP: GET / 304 4.702 ms - -
2021-04-26 15:58:42.062 INFO APP: GET /static/js/app.e73b34421653934249a9.js 304 11.666 ms - -
2021-04-26 15:58:42.071 INFO APP: GET /static/css/app.0a19f55522057b90e19b.css 304 4.897 ms - -
2021-04-26 15:58:42.442 INFO APP: GET /api/auth-enabled 304 15.815 ms - -
2021-04-26 15:58:42.669 INFO APP: GET /static/fonts/MaterialIcons-Regular.fa3334f.woff2 304 4.890 ms - -
2021-04-26 15:58:42.674 INFO APP: GET /static/logo.png 304 7.091 ms - -
2021-04-26 15:58:42.941 INFO APP: GET /api/settings 304 259.641 ms - -
2021-04-26 15:58:42.975 INFO APP: GET /api/auth-enabled 304 5.099 ms - -
2021-04-26 15:58:52.238 INFO APP: GET / 304 4.511 ms - -
2021-04-26 15:58:52.281 INFO APP: GET /static/js/app.e73b34421653934249a9.js 304 3.386 ms - -
2021-04-26 15:58:52.285 INFO APP: GET /static/css/app.0a19f55522057b90e19b.css 304 5.143 ms - -
2021-04-26 15:58:52.462 INFO APP: GET /api/auth-enabled 304 3.431 ms - -
2021-04-26 15:58:52.545 INFO APP: GET /static/logo.png 304 4.008 ms - -
2021-04-26 15:58:52.687 INFO APP: GET /static/fonts/MaterialIcons-Regular.fa3334f.woff2 304 1.851 ms - -
2021-04-26 15:58:52.923 INFO APP: GET /api/settings 304 220.534 ms - -
2021-04-26 15:58:52.950 INFO APP: GET /api/auth-enabled 304 4.866 ms - -
2021-04-26 15:59:44.695 INFO APP: GET /health/zwave 200 1.862 ms - 1875
2021-04-26 16:01:44.709 INFO APP: GET /health/zwave 200 2.706 ms - 1875

What could be the problem?

found this extra in the log:
<--- Last few GCs --->
[355:0x7f83cf5290] 834617 ms: Scavenge 1891.7 (1897.2) -> 1890.2 (1897.5) MB, 5.3 / 0.0 ms (average mu = 0.277, current mu = 0.236) task
[355:0x7f83cf5290] 834659 ms: Scavenge 1891.8 (1897.5) -> 1890.3 (1897.5) MB, 4.4 / 0.0 ms (average mu = 0.277, current mu = 0.236) task
[355:0x7f83cf5290] 834707 ms: Scavenge 1891.8 (1901.5) -> 1890.3 (1901.5) MB, 4.9 / 0.0 ms (average mu = 0.277, current mu = 0.236) task
<--- JS stacktrace --->
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
[17:01:57] INFO: Starting the Z-Wave JS to MQTT...