TypeError: 'NoneType' object is not callable in __del__() when exiting

[gbutiri]

Prerequisites

• [x] I am running the latest code.
• [x] I followed the README.md.
• [x] I searched open/closed issues.
• [x] This is a reproducible error and fix.

Expected Behavior

When the model is closed or Python exits, it should clean up resources quietly.

Current Behavior

When using Llama(...), a crash occurs on exit:

TypeError: 'NoneType' object is not callable

This happens inside __del__() when it tries to close internal objects (e.g., ExitStack or model context) that are already None.

Environment and Context

• Windows 11
• Python 3.11.3
• llama-cpp-python version: 0.3.8
• Using quantized GGUF model via Llama(...)

Steps to Reproduce

1. Load model via Llama(model_path=..., ...)
2. Let script exit
3. Observe destructor crash in logs

Recommended Fix

Wrap close() call in __del__() like so:

def __del__(self):
    try:
        self.close()
    except Exception:
        pass