Traceback (most recent call last): File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main return _run_code(code, main_globals, None, File "/usr/lib/python3.10/runpy.py", line 86, in _run_code exec(code, run_globals) File "/build/python-libcst/src/LibCST-0.3.20/libcst/codegen/generate.py", line 168, in sys.exit(main(sys.argv[1:])) File "/build/python-libcst/src/LibCST-0.3.20/libcst/codegen/generate.py", line 157, in main codegen_matchers() File "/build/python-libcst/src/LibCST-0.3.20/libcst/codegen/generate.py", line 115, in codegen_matchers format_file(matchers_file) File "/build/python-libcst/src/LibCST-0.3.20/libcst/codegen/generate.py", line 30, in format_file subprocess.check_call(["black", fname], stdout=devnull, stderr=devnull) File "/usr/lib/python3.10/subprocess.py", line 369, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['black', '/build/python-libcst/src/LibCST-0.3.20/libcst/matchers/__init__.py']' returned non-zero exit status 1. ==> ERROR: A failure occurred in prepare().  Aborting...