Bitcoin.co.id nullPointerException

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Exception in thread "Strategy Crypto Task" java.lang.NullPointerException
    at com.nubits.nubot.trading.wrappers.BitcoinCoIDWrapper.getBalanceImpl(BitcoinCoIDWrapper.java:164)
    at com.nubits.nubot.trading.wrappers.BitcoinCoIDWrapper.getAvailableBalances(BitcoinCoIDWrapper.java:136)
    at com.nubits.nubot.strategy.Secondary.StrategySecondaryPegUtils.recount(StrategySecondaryPegUtils.java:381)
    at com.nubits.nubot.strategy.Secondary.StrategySecondaryPegTask.initStrategy(StrategySecondaryPegTask.java:124)
    at com.nubits.nubot.strategy.Secondary.StrategySecondaryPegTask.run(StrategySecondaryPegTask.java:63)
    at java.util.TimerThread.mainLoop(Timer.java:555)
    at java.util.TimerThread.run(Timer.java:505)