Ember/ZigBee-Coordinator Binding not works. ONLY INITIALIZING OR OFFLINE ERROR COMM PORT

Hello Friends, i am new and this is my First Post.

i have installed on a Debian Raspbian System openHAB 3.4.4.

I would like to used Zigbee, and im buy a ZB-Dongle E from Sonoff.

He Tells me everytime in Log that “Unable to open serial Port”

Vendor/Product-ID was 10c4 ea60

i am make the tty and dialout group to openhab user and add on etc/default/openhab:
EXTRA_JAVA_OPTS=“-Dgnu.io.rxtx.SerialPorts=/dev/ttyUSB0”

ls -l /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 0 26. Dez 20:06 /dev/ttyUSB0

dmesg | grep ttyUSB0
[ 996.439731] usb 1-1.2: cp210x converter now attached to ttyUSB0

and make an udev-Rules with
SUBSYSTEM==“tty”,
ATTRS{idVendor}==“10c4”,
ATTRS{idProduct}==“ea60”,
GROUP=“dialout”, MODE=“0660”
on etc/udev/rules.d/99-usb-serial.rules

and udevadm control --reload

The BINDING going NOT Online on openhab 3.4.4:

I Think the Serial Port can not used in openhab.

What can i do? Other Stick?

i am searching 2 days around the Christmas and dont Find the Solution of this Problem.

THAAANK YOU :frowning:

Does the openHAB user have permission to read/write to the serial device? It should be a member of the dialout group.