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java.lang.ArrayIndexOutOfBoundsException: null	at java.lang.System.arraycopy(Native Method)	at org.ethereum.core.CallTransaction$IntType.encodeInt(CallTransaction.java:397)	at org.ethereum.core.CallTransaction$IntType.encode(CallTransaction.java:379)	at org.ethereum.core.CallTransaction$Function.encodeArguments(CallTransaction.java:470)	at org.ethereum.core.CallTransaction$Function.encode(CallTransaction.java:442)	at org.ethereum.core.CallTransaction.createCallTransaction(CallTransaction.java:44)	at org.ethereum.facade.EthereumImpl.callConstantFunction(EthereumImpl.java:277)