ipk.py script option error

[blinard-BIOINFO]

If ipk.py is launch with --ar-config model.json but not the option -m, this error occurs.
The latter should not be necessary if the model is loaded via JSON.

Traceback (most recent call last):
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/bin/ipk.py", line 354, in <module>
    ipk()
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/lib/python3.12/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/lib/python3.12/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/lib/python3.12/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/lib/python3.12/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/lib/python3.12/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/bin/ipk.py", line 220, in build
    build_database(ar,
  File "/home/belinard/SOFTWARE_LOCAL/miniconda3/envs/epik/bin/ipk.py", line 335, in build_database
    command_str = " ".join(s for s in command)