Execution error

[Ojda22]

Hello, I have a problem when I want to run DeepMutation with the provided config file.

I'm running on MacOS Big sure.
After cloning the project, I created a conda environment, with the exact requirements.

I run python3 defects4j_checkout.py -f Lang (after deleting Chart from the dict)
And ./check_env.sh with success

Next I replaced Chart with Lang inside of config example file

And when I run java -jar dist/DeepMutation.jar config , I obtain the following errors:

Extracting methods from data/in/Lang/1f/...
  Building AST...
  done.
  ERROR: Could not extract any methods.
done.
Writing extracted methods...
done.
Abstracting methods...
  ERROR: null/empty input map
Writing abstracted methods...
done.
Writing mappings...
done.
Mutating methods...
  ERROR: null/empty input map
Writing abstracted mutants...
  ERROR: cannot write null/empty map
Translating abstract mutants...
  ERROR: null/empty input map
Writing translated mutants...
ERROR: cannot write null/empty map
Creating mutant files...
  ERROR: cannot write null/empty map
Testing ${HOME}/DeepMutation/data/in/Lang/1f...
  ERROR: maps are null for all models
Writing logs...
  ERROR: cannot write null maps
Writing timeouts...
  ERROR: cannot write null timeouts map
Writing results...
  ERROR: cannot write null result maps

Please can you tell me is there anything I'm doing wrong?