Optimize method fails w/o any error info

### Expected behavior


I try to optimize a set of args, it fails. But it doesn’t show what the error is. A simple backtest runs, so I know that’s fine. I’ve tried printing to console with try/except in init & super. But nothing. Dunno how to tell what exactly the issue is if I don’t get errors

### Code sample

```python

```

### Actual behavior

It just shows a failed bar. Instead of either actually working or showing the error stack

### Additional info, steps to reproduce, full crash traceback, screenshots

_No response_

### Software versions

- `backtesting.__version__`: 0.6.4
- `pandas.__version__`: 2.3.0
- `numpy.__version__`: 2.2.0
- `bokeh.__version__`: 3.7.3
- OS: Sequoia 15.6.1

Start at the optimize entry point and reproduce the failure using the reporter's package versions; the issue provides no runnable code or traceback. Trace how optimization failures are handled and verify that the failed run exposes actionable error information instead of only showing a failed bar.

Written by the indexing model from the issue text.