# How to Get the Full Error Traceback
## The Problem
We're getting `NotImplementedError()` but we need to see the **full traceback** to know exactly where it's failing.
## Steps to Get the Traceback
### Method 1: Check Backend Terminal
1. **Look at your backend terminal** (where `py run_server.py` is running)
2. **Make a request** that triggers the error:
- Go to Swagger UI: `http://localhost:8000/docs`
- Click `POST /api/playwright/snapshot`
- Click "Try it out"
- Enter: `{"url": "wikipedia.org", "use_cache": false}`
- Click "Execute"
3. **Immediately check the backend terminal**
4. **Scroll up** to find the error logs
5. **Look for lines like:**
```
ERROR: Error generating Playwright snapshot (NotImplementedError): ...
Full traceback:
Traceback (most recent call last):
File "...", line X, in ...
...
NotImplementedError: ...
```
6. **Copy the ENTIRE traceback** (from "Traceback" to the end)
### Method 2: Enable More Verbose Logging
Add this to see more details:
```python
# In src/main.py, around line 620
logger.error(f"Error generating Playwright snapshot ({error_type}): {error_msg}")
logger.error(f"Full traceback:\n{full_traceback}")
```
### Method 3: Test Directly from Python
Run this in a Python REPL to see the exact error:
```python
import asyncio
from playwright.async_api import async_playwright
async def test():
async with async_playwright() as p:
browser = await p.chromium.launch(headless=True)
# This will show the exact error location
asyncio.run(test())
```
## What to Look For
The traceback will show:
- **Which line** is causing the error
- **Which function** is calling it
- **What operation** is failing (browser launch, page navigation, etc.)
## Share the Traceback
Once you have the full traceback, share it and we can fix the exact issue!
