error in json serialization of certain block

[yanilkr]

If you try to get block 1280715 with jsonrpc on neo.testnet you get this error.

{'jsonrpc': '2.0', 'id': 0, 'error': {'code': -32603, 'message': 'list index out of range'}}

The root cause of the problem is here

neo-python/neo/Core/Block.py

Line 257 in 04445dc

if self.Transactions[0] and isinstance(self.Transactions[0], str):

It should be

if len(self.Transactions) > 0 and isinstance(self.Transactions[0], str):

neoscan gets this block correctly
https://neoscan-testnet.io/block/fa36382ec3e52ca6d731449c37de77491a442fd8a21a59b46211ea3e61093cb3

[brianlenz]

I believe this is the same as #302 (or certainly the same error, anyway). The issue was that an invalid block was relayed. The fundamental issue is that there is a block with no transactions, as that shouldn't really occur. This was ultimately transferred to a neo core issue: neo-project/neo#193