Creating multiple times database leads to non-functional

Hi,

This command:

/usr/bin/pakon-maintain create-databases

does not give any output and I already had the database and it was working, but when I try to call it, then it leads to this error:

root@turris:~# pakon-show
Traceback (most recent call last):
  File "/usr/bin/pakon-show", line 33, in <module>
    sys.exit(load_entry_point('pakon==1.2.2', 'console_scripts', 'pakon-show')())
  File "/usr/lib/python3.9/site-packages/pakon/show/__main__.py", line 116, in main
  File "/usr/lib/python3.9/json/__init__.py", line 346, in loads
  File "/usr/lib/python3.9/json/decoder.py", line 337, in decode
  File "/usr/lib/python3.9/json/decoder.py", line 355, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

The script should check, if the database is alright and don't create a new one.