eth_getTransactionByHash throws error, missing null check for tx["clauses"][0]

[ghost]

error log

{
  jsonrpc: '2.0',
  error: { code: -32000, message: 'Server error' },
  id: 'VET'
}

ERROR:root:list index out of range
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/jsonrpcserver/dispatcher.py", line 134, in handle_exceptions
    yield handler
  File "/usr/local/lib/python3.8/dist-packages/jsonrpcserver/async_dispatcher.py", line 41, in safe_call
    result = await call(
  File "/usr/local/lib/python3.8/dist-packages/jsonrpcserver/async_dispatcher.py", line 34, in call
    return await validate_args(method, *args, **kwargs)(*args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/gear/rpc.py", line 28, in wrapper
    raise e
  File "/usr/local/lib/python3.8/dist-packages/gear/rpc.py", line 22, in wrapper
    result = await func(*args, **kw)
  File "/usr/local/lib/python3.8/dist-packages/gear/rpc.py", line 236, in eth_getTransactionByHash
    return await thor.get_transaction_by_hash(tx_hash)
  File "/usr/local/lib/python3.8/dist-packages/gear/thor/client.py", line 128, in get_transaction_by_hash
    return None if tx is None else thor_tx_convert_to_eth_tx(tx)
  File "/usr/local/lib/python3.8/dist-packages/gear/utils/compat.py", line 118, in thor_tx_convert_to_eth_tx
    "to": tx["clauses"][0]["to"],
IndexError: list index out of range

---

On block number 11006969 (0xa7f3f9) it has transaction with 0x897a17e5781a096076b63e887baa27f5289edf1a6d392b1c5271ab82b68de782 hash.

{
  "id": "0x897a17e5781a096076b63e887baa27f5289edf1a6d392b1c5271ab82b68de782",
  "chainTag": 74,
  "blockRef": "0x00a7f3f86790809c",
  "expiration": 18,
  "clauses": [],
  "gasPriceCoef": 0,
  "gas": 21000,
  "origin": "0x12fca90a72a6683242447f328ed0adf9fdbded34",
  "delegator": null,
  "nonce": "0x77985ebc595875b5",
  "dependsOn": null,
  "size": 95,
  "meta": {
    "blockID": "0x00a7f3f9d659d4989fac36c7fb97fa5f10d754aa885a9646070a914036b6d1a8",
    "blockNumber": 11006969,
    "blockTimestamp": 1640585950
  }
}

Because the clauses of the transaction is an empty array, it throws error on thor_tx_convert_to_eth_tx(tx)

def thor_tx_convert_to_eth_tx(tx):
    return {
        "hash": tx["id"],
        "nonce": tx["nonce"],
        "blockHash": tx["meta"]["blockID"],
        "blockNumber": encode_number(tx["meta"]["blockNumber"]),
        "transactionIndex": encode_number(0),
        "from": tx["origin"],
        "to": tx["clauses"][0]["to"] # if len(tx['clauses']) > 0 else None,
        "value": tx["clauses"][0]["value"] # len(tx['clauses']) > 0 else None,
        "gas": encode_number(tx["gas"]),
        "gasPrice": encode_number(1),
        "input": tx["clauses"][0]["data"] # len(tx['clauses']) > 0 else None,
    }

Is if len(tx['clauses']) > 0 else None could be a correct patch?

[ghost]

thor_receipt_convert_to_eth_receipt also throw error

ERROR:root:list index out of range
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/jsonrpcserver/dispatcher.py", line 134, in handle_exceptions
    yield handler
  File "/usr/local/lib/python3.8/dist-packages/jsonrpcserver/async_dispatcher.py", line 41, in safe_call
    result = await call(
  File "/usr/local/lib/python3.8/dist-packages/jsonrpcserver/async_dispatcher.py", line 34, in call
    return await validate_args(method, *args, **kwargs)(*args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/gear/rpc.py", line 28, in wrapper
    raise e
  File "/usr/local/lib/python3.8/dist-packages/gear/rpc.py", line 22, in wrapper
    result = await func(*args, **kw)
  File "/usr/local/lib/python3.8/dist-packages/gear/rpc.py", line 244, in eth_getTransactionReceipt
    return await thor.get_transaction_receipt(tx_hash)
  File "/usr/local/lib/python3.8/dist-packages/gear/thor/client.py", line 139, in get_transaction_receipt
    return None if receipt is None else thor_receipt_convert_to_eth_receipt(receipt)
  File "/usr/local/lib/python3.8/dist-packages/gear/utils/compat.py", line 64, in thor_receipt_convert_to_eth_receipt
    "contractAddress": None if receipt["reverted"] else receipt["outputs"][0]["contractAddress"],
IndexError: list index out of range