- Updated `process_price_change` to accept an optional `asset_id` parameter for better asset validation.
- Modified `process_data` to ensure `json_datas` is always a list and to pass `asset_id` when available.
- Added checks in `update_markets` to ensure the 'multiplier' column exists and fill NaN values with empty strings.
- Refactored multiplier application in `get_buy_sell_amount` to use `row.get()` for safer access.
nicolasakf