modify_isolated_position_margin always trigger error 4054, "Cannot add position margin: position is 0."

[IHateCodesss]

It seems that the modify_isolated_position_margin is problematic.
I first run the umfuture.account(recvWindow=6000) and got response with positions
{'initialMargin': '191.00400000', 'isolatedMargin': '174.91529420', 'isolatedWallet': '195.16329420', 'maintMargin': '3.82008000', 'notional': '955.02000000', 'positionAmt': '0.010', 'positionSide': 'LONG', 'symbol': 'BTCUSDC', 'unrealizedProfit': '-20.24800000', 'updateTime': 1739836800303}],
However, the following modify_isolated_position_margin is always returning error 4054
update_margin_res = self.umfuture.modify_isolated_position_margin( # type 1: Add position margin，2: Reduce position margin # margin_symbol like "BTCUSDT" # symbol=self.get_bn_symbol(token), symbol="ARBUSDT", amount=amount, type=1, recvWindow=6000, )
error :
(400, -4054, 'Cannot add position margin: position is 0.', {'Date': 'Tue, 18 Feb 2025 07:50:57 GMT', 'Content-Type': 'application/json', 'Content-Length': '65', 'Connection': 'keep-alive', 'Server': 'Tengine', 'x-mbx-used-weight-1m': '45', 'x-response-time': '11ms', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS'})
Any expert could help me out?