Errors 3.3.2 on a pair with a (past) manual pair

[paramecie]

Running 3.3.2 seems to work on Bittrex BTC_ARK, for example.

But tried to run on BTC_OMG, same config, nothing fancy, just a different pair.

It throws many errors because probably I placed a manual order 15 days ago (closed order) :

###[ --2017/09/13 02:57:39--Bittrex--BTC_OMG  --  Gunbot v3.3 cycle #1 --------------- ]
::::: collecting market data...
Server running at http://127.0.0.1:54151
(node:5008) DeprecationWarning: Calling an asynchronous function without callback is deprecated.
Bad server answer [ { OrderUuid: 'b4024265-3cd8-41ef-8834-d93cc8079ee6',
Unhandled rejection Error: Bad server answer
    Exchange: 'BTC-OMG',
    at console.C:\snapshot\Users\Enrico\Desktop\xBot_v2.9.3\bittrex.js.module.exports.Market.getLastBuyRate.Promise.bittrex.private.getOrderHistory.then (evalmachine.<anonymous>:0:0)
    TimeStamp: '2017-08-31T14:13:32.427',


(... as there is maybe 100 lines like this just for cycle 1)


The log file shows :

2017/09/13 02:53:33   Activating hot reconfig...
2017/09/13 02:53:33   ###[ --2017/09/13 02:53:33--Bittrex--BTC_OMG  --  Gunbot v3.3 cycle #1 --------------- ]
2017/09/13 02:53:33   ::::: collecting market data...
2017/09/13 02:53:33   Server running at http://127.0.0.1:54117
2017/09/13 02:53:34   Bad server answer,[object Object]
2017/09/13 02:53:34   Bad server answer,[object Object]
2017/09/13 02:53:34   ***************************************************
2017/09/13 02:53:34   Low BB:0.00000000 - High BB:0.00000000
2017/09/13 02:53:34   ***************************************************
2017/09/13 02:53:34   BB price to sell 0.0000000 -- GAIN price to sell NaN
2017/09/13 02:53:34   BB price to buy 0 -- GAIN price to buy 0
2017/09/13 02:53:34   Bad server answer,[object Object]
2017/09/13 02:53:36   LP 0.00278989  Bal.BTC 0.05300062  Bal.OMG 0(0)
2017/09/13 02:53:36   No open orders
2017/09/13 02:53:36   boughtPrice undefined
2017/09/13 02:53:36   price  steady (0)
2017/09/13 02:53:36   PriceToBuy,0.0000,priceToSell,--not set--
2017/09/13 02:53:36   LP 27.8989000,>,prBuy 0.0000000  secMargin 0  grows no
2017/09/13 02:53:36   no altcoins: 0
2017/09/13 02:53:36   price to buy: 0
2017/09/13 02:53:36   last price is too high
2017/09/13 02:53:36   Gunbot callback at 2017/09/13 02:53:36 cycle # 1
2017/09/13 02:53:36   Callback:
2017/09/13 02:53:36   ---------
2017/09/13 02:53:36   price too high
need faster: no
need slower: no


Is there a way to avoid this problem?
Thank you-