Describe the bug

When running a V2 strategy with the binance_perpetual_testnet connector, I was getting the following start_trade_monitor failed error:

2025-11-04 11:55:16,386 - 65774 - hummingbot.client.hummingbot_application - ERROR - start_trade_monitor failed.
Traceback (most recent call last):
  File "/Users/me/Developer/trading/hummingbot/hummingbot/client/ui/interface_utils.py", line 78, in start_trade_monitor
    cur_balances = await hb.trading_core.get_current_balances(market)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/me/Developer/trading/hummingbot/hummingbot/core/trading_core.py", line 723, in get_current_balances
    await self.connector_manager.update_connector_balances(connector_name)
  File "/Users/me/Developer/trading/hummingbot/hummingbot/core/connector_manager.py", line 203, in update_connector_balances
    raise ValueError(f"Connector {connector_name} not found")
ValueError: Connector binance_perpetual not found

The problem here is it’s looking for a binance_perpetual connector rather than binance_perpetual_testnet as it should be.

I think I’ve found the source of the issue, but I’m unsure whether my "fix" is correct. Here’s a summary of my investigation:

1. I added some logging to interface_utils.py and noted the following:

if hb.trading_core._strategy_running and hb.trading_core.strategy is not None:

  # Here `hb.trading_core.markets` has the expected key: 'binance_perpetual_testnet'
  if all(market.ready for market in hb.trading_core.markets.values()):
    with hb.trading_core.trade_fill_db.get_new_session() as session:

      # But here each entry of `trades` has a market key with the incorrect name: 'binance_perpetual'
      trades: List[TradeFill] = hb._get_trades_from_session(
        int(hb.init_time * 1e3),
        session=session,
        config_file_path=hb.strategy_file_name)
      if len(trades) > 0:
        return_pcts = []
        pnls = []
        market_info: Set[Tuple[str, str]] = set((t.market, t.symbol) for t in trades)
        for market, symbol in market_info:
          cur_trades = [t for t in trades if t.market == market and t.symbol == symbol]
          cur_balances = await hb.trading_core.get_current_balances(market)
...

2. I then followed the calls through to markets_recorder.py which is setting the market field to market.display_name.

3. I then followed that to connector_base.pyx, which returns self.name

4. I then looked in binance_perpetual_derivative.py and noted that name returns CONSTANTS.EXCHANGE_NAME which is "binance_perpetual".

5. I updated this on my local copy of Hummingbot to instead return self._domain (the same way derive_perpetual.py does):

@property
def name(self) -> str:
  return self._domain # Changed from CONSTANTS.EXCHANGE_NAME

This fixed my issue 🎉, but I’m very new to Hummingbot, and so I’m unsure if this is the correct fix.

Steps to reproduce

As far as I can tell it’s as simple as running a V2 strategy with the binance_perpetual_testnet connector. I encountered the issue while writing a custom controller which I can’t share here, but it seems like a general issue.

I initially encountered the issue using hummingbot-deploy, and confirmed it on the source installation.

Release version

2.10.0

Type of installation

Source

Attach required files

No response