Issues running RAK commands

Hi Guys,
I recently bought the IoT LoRa Node Phat, using with Raspberry Pi 4 Model B 8GB RAM.
My OS Version : Raspbian GNU/Linux 10 (buster)
For reference, I did follow this link,
I have run in to an issue with the initial setup, it seems when running rak811 commands I’m getting errors, for example,
[email protected]:~ $ rak811 -d get-config dev_eui
DEBUG:rak811.serial:Serial initialized
DEBUG:rak811.serial:Sending: >at+get_config=dev_eui\r\n<
RAK811 timeout: Timeout while waiting for data

Details :
[email protected]:~ $ ls -l /dev/serial*
lrwxrwxrwx 1 root root 7 Jan 25 11:27 /dev/serial0 → ttyAMA0
lrwxrwxrwx 1 root root 5 Jan 25 11:27 /dev/serial1 → ttyS0

[email protected]:~ $ ls -l /dev/ttyAMA*
crw-rw---- 1 root dialout 204, 64 Jan 25 11:27 /dev/ttyAMA0

[email protected]:~ $ ls -l /dev/ttyS*
crw-rw---- 1 root dialout 4, 64 Jan 25 11:27 /dev/ttyS0

[email protected]:~ $ rak811v3 -v -d version
DEBUG:rak811.serial:Serial initialized
DEBUG:rak811.serial:Sending: >at+version\r\n<
Traceback (most recent call last):
File “/usr/local/bin/rak811v3”, line 8, in
File “/usr/local/lib/python3.7/dist-packages/click/”, line 1130, in call
return self.main(*args, **kwargs)
File “/usr/local/lib/python3.7/dist-packages/click/”, line 1055, in main
rv = self.invoke(ctx)
File “/usr/local/lib/python3.7/dist-packages/click/”, line 1657, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/usr/local/lib/python3.7/dist-packages/click/”, line 1404, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/usr/local/lib/python3.7/dist-packages/click/”, line 760, in invoke
return __callback(*args, **kwargs)
File “/usr/local/lib/python3.7/dist-packages/click/”, line 26, in new_func
return f(get_current_context(), *args, **kwargs)
File “/usr/local/lib/python3.7/dist-packages/rak811/”, line 146, in version
File “/usr/local/lib/python3.7/dist-packages/rak811/”, line 442, in version
File “/usr/local/lib/python3.7/dist-packages/rak811/”, line 252, in _send_command
response = self._serial.receive(timeout=timeout)
File “/usr/local/lib/python3.7/dist-packages/rak811/”, line 156, in receive
raise Rak811TimeoutError(‘Timeout while waiting for data’)
rak811.serial.Rak811TimeoutError: Timeout while waiting for data

Maybe my Phat and Raspberry are not connected correctly ?

Welcome to RAK forum @Itadox ,

It seems that the python library on the tutorial is from pi-supply.

It might be good idea to reach out to them and show these errors since they are more familiar with the library. We can support you on RAK811 AT commands but not with this custom library.

Thank you carlrowan
i appreciate it