EOFError: Ran out of input

[Saad-Akmal]

Python\Python313\Lib\multiprocessing\spawn.py", line 132, in _main
self = reduction.pickle.load(from_parent)
EOFError: Ran out of input

[conor19w]

Fairly sure this happens if there was an issue downloading price data on a previous backtester run.
You should be able to see which coin it's failing on and delete the associated data.
Then a re-run will download the data again

[Saad-Akmal]

Not sure but might be problem was with python interpreter