problems with configuration on Dietpi

[pcossu61]

I try to install weewx-sdr on Dietpi on a Pine64
following the instructions
I get an error
dietpi@DietPiBusterweewx:/usr/share/weewx$ sudo PYTHONPATH=bin python /usr/share/weewx/user/sdr.py --cmd="rtl_433 -f 868.3M -s 1024k -M utc -F json"
sudo: unable to resolve host DietPiBusterweewx: Name or service not known
Traceback (most recent call last):
File "/usr/share/weewx/user/sdr.py", line 106, in
import weewx.drivers
ImportError: No module named weewx.drivers