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Invoke getnep17transfers from TokenTracker throw NullReferenceException #971

@superboyiii

Description

@superboyiii

Request:

{
    "jsonrpc": "2.0",
    "method": "getnep17transfers",
    "params": ["NT9q6iheTKYvsqnycb6KfNJKtm93nK72aJ", 0],
    "id": 1
}

Response:

{
    "jsonrpc": "2.0",
    "id": 1,
    "error": {
        "code": -2147467261,
        "message": "Object reference not set to an instance of an object. -    at Neo.Plugins.Trackers.TokenTransferKey.Deserialize(MemoryReader& reader)\r\n   at Neo.Extensions.MemoryReaderExtensions.ReadSerializable[T](MemoryReader& reader) in E:\\Master-smoking\\2026-01-13\\neo\\src\\Neo\\Extensions\\IO\\MemoryReaderExtensions.cs:line 48\r\n   at Neo.Extensions.ByteExtensions.AsSerializable[T](Byte[] value, Int32 start) in E:\\Master-smoking\\2026-01-13\\neo\\src\\Neo\\Extensions\\ByteExtensions.cs:line 50\r\n   at Neo.Plugins.Extensions.FindRange[TKey,TValue](IStore db, Byte[] startKey, Byte[] endKey)+MoveNext()\r\n   at System.Linq.Enumerable.IEnumerableSkipTakeIterator`1.ToList()\r\n   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)\r\n   at Neo.Plugins.Trackers.NEP_17.Nep17Tracker.AddNep17Transfers(Byte dbPrefix, UInt160 userScriptHash, UInt64 startTime, UInt64 endTime, JArray parentJArray)\r\n   at Neo.Plugins.Trackers.NEP_17.Nep17Tracker.GetNep17Transfers(Address address, UInt64 startTime, UInt64 endTime)\r\n   at InvokeStub_Func`4.Invoke(Object, Span`1)\r\n   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)",
        "data": "   at Neo.Plugins.Trackers.TokenTransferKey.Deserialize(MemoryReader& reader)\r\n   at Neo.Extensions.MemoryReaderExtensions.ReadSerializable[T](MemoryReader& reader) in E:\\Master-smoking\\2026-01-13\\neo\\src\\Neo\\Extensions\\IO\\MemoryReaderExtensions.cs:line 48\r\n   at Neo.Extensions.ByteExtensions.AsSerializable[T](Byte[] value, Int32 start) in E:\\Master-smoking\\2026-01-13\\neo\\src\\Neo\\Extensions\\ByteExtensions.cs:line 50\r\n   at Neo.Plugins.Extensions.FindRange[TKey,TValue](IStore db, Byte[] startKey, Byte[] endKey)+MoveNext()\r\n   at System.Linq.Enumerable.IEnumerableSkipTakeIterator`1.ToList()\r\n   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)\r\n   at Neo.Plugins.Trackers.NEP_17.Nep17Tracker.AddNep17Transfers(Byte dbPrefix, UInt160 userScriptHash, UInt64 startTime, UInt64 endTime, JArray parentJArray)\r\n   at Neo.Plugins.Trackers.NEP_17.Nep17Tracker.GetNep17Transfers(Address address, UInt64 startTime, UInt64 endTime)\r\n   at InvokeStub_Func`4.Invoke(Object, Span`1)\r\n   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)"
    }
}

I'm not sure when it's been modified. But seems TokenTransferKey.Deserialize: it calls Deserialize on uninitialized UserScriptHash and AssetScriptHash properties, causing a NullReferenceException. It should be changed to use reader.ReadSerializable<UInt160>() instead.

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