concurrent.futures._base.TimeoutError

I encounter an issue, when I preprocess the `rcsb `data and run `process_mmcif_metadata.py`.
I don't know which sample has the problem, how to solve it? thanks!

```
Traceback (most recent call last):
File "confdiff/ConfDiff/src/utils/misc/process.py", line 110, in mp_with_timeout
result = next(result_itr)
File "/home/ubuntu/anaconda3/envs/confdiff/lib/python3.9/site-packages/pebble/pool/base_pool.py", line 224, in next
raise result
File "/home/ubuntu/anaconda3/envs/confdiff/lib/python3.9/site-packages/pebble/pool/base_pool.py", line 264, in chunk_result
return future.result(timeout=timeout)
File "/home/ubuntu/anaconda3/envs/confdiff/lib/python3.9/concurrent/futures/_base.py", line 448, in result
raise TimeoutError()
concurrent.futures._base.TimeoutError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/ubuntu/anaconda3/envs/confdiff/lib/python3.9/runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/home/ubuntu/anaconda3/envs/confdiff/lib/python3.9/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "confdiff/ConfDiff/datasets/rcsb/process_mmcif_metadata.py", line 359, in
main(args)
File "confdiff/ConfDiff/datasets/rcsb/process_mmcif_metadata.py", line 280, in main
results = mp_with_timeout(
File "confdiff/ConfDiff/src/utils/misc/process.py", line 117, in mp_with_timeout
f"Timeout {error.args[1]} s: {error_report_fn(current_ix)}"
IndexError: tuple index out of range
```