[BUG] AttributeError on appending to an existing JSON field

[satviksingh835]

---

name: 🐛 Bug Report
about: Create a report to help us improve FireForm.
title: "[BUG]: AttributeError when adding multiple values to the same JSON field"
labels: bug
assignees: ''

---

⚡️ Describe the Bug

In src/llm.py, the add_response_to_json method throws an AttributeError when attempting to add a second value to an already existing key in the parsed JSON dictionary. The code assumes that if the key exists, it is a list and calls .append(). However, the initial value is stored as a string (or extracted scalar), not a list, causing the application to crash with AttributeError: 'str' object has no attribute 'append'.

👣 Steps to Reproduce

1. Initialize the LLM class from src/llm.py.
2. Call llm.add_response_to_json("my_field", "first_value"). The internal dictionary becomes {"my_field": "first_value"}.
3. Call llm.add_response_to_json("my_field", "second_value").
4. See error: AttributeError: 'str' object has no attribute 'append'.

📉 Expected Behavior

When a second value is added to an existing key, the code should gracefully handle it by converting the existing string value into a list containing both the old and new values, or the initial insertion should automatically instantiate a list.

🖥️ Environment Information

• OS: macOS
• Docker/Compose Version: N/A
• Ollama Model used: mistral (default in main_loop)

📸 Screenshots/Logs

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/src/llm.py", line 102, in add_response_to_json
    self._json[field].append(parsed_value)
AttributeError: 'str' object has no attribute 'append'

[satviksingh835]

seems good