zkevm_getBatchByNumber is returning None for batches with no transactions

[0xAdriaTorralba]

I have synced the Polygon zkEVM network using this repo, and when I try to obtain the batch information using the zkevm_getBatchByNumber endpoint, it returns None for the batches that have no transactions. Find the output example below (batch_index response)

1 {'jsonrpc': '2.0', 'id': 42, 'result': None}
5 {'jsonrpc': '2.0', 'id': 42, 'result': None}
7 {'jsonrpc': '2.0', 'id': 42, 'result': None}
17 {'jsonrpc': '2.0', 'id': 42, 'result': None}
26 {'jsonrpc': '2.0', 'id': 42, 'result': None}
27 {'jsonrpc': '2.0', 'id': 42, 'result': None}
30 {'jsonrpc': '2.0', 'id': 42, 'result': None}
32 {'jsonrpc': '2.0', 'id': 42, 'result': None}
34 {'jsonrpc': '2.0', 'id': 42, 'result': None}
39 {'jsonrpc': '2.0', 'id': 42, 'result': None}
41 {'jsonrpc': '2.0', 'id': 42, 'result': None}
45 {'jsonrpc': '2.0', 'id': 42, 'result': None}
46 {'jsonrpc': '2.0', 'id': 42, 'result': None}
59 {'jsonrpc': '2.0', 'id': 42, 'result': None}
70 {'jsonrpc': '2.0', 'id': 42, 'result': None}

According to Polygonscan zkEVM explorer, these are 1-to-1 match with those batches that have no transactions within.

I'm getting this information running the following in Python.

    def getBatchByNumber(self, number, printJson=False):
        parameters = {
            "jsonrpc": "2.0",
            "method": "zkevm_getBatchByNumber", 
            "params": [number],
            "id": 42
        }
        if printJson: return self.rpc.post(self.headers, parameters).json()
        return self.rpc.post(self.headers, parameters).text

Is this a known bug, or am I doing something wrong here?

EDIT: I have this running on latest version using docker. I don't know if this points to v2.0.x or v2.60.0.

[0xAdriaTorralba]

After forcing the node to run v2.60.0 and using the --db.size.limit 8TB workaround, I get this error when I try to obtain the information of batch 1

Enter batch number: 1
[
    {
        "jsonrpc": "2.0",
        "id": 42,
        "error": {
            "code": -32000,
            "message": "method handler crashed"
        }
    }
]

and on the node: cdk-erigon-zkevm | [EROR] [12-16|12:36:32.728] RPC method zkevm_getBatchByNumber crashed: runtime error: index out of range [0] with length 0

[obynonwane]

Hi @0xAdriaTorralba, have noted the issue. It indeed do crash. Will report that to the team

[0xAdriaTorralba]

Okay, thank you @obynonwane, I also noticed that the AccInputHash is not retreiving correctly calling the same endpoint.
It returns

failed to get acc input hash for batch 406227: failed to get transaction data for tx 0x4a26e1f4630b02248ce905a0c00bcae093b4360309e0e3f2cdece2489c458f49: no result in JSON-RPC response

[obynonwane]

Okay, thank you @obynonwane, I also noticed that the AccInputHash is not retreiving correctly calling the same endpoint. It returns

failed to get acc input hash for batch 406227: failed to get transaction data for tx 0x4a26e1f4630b02248ce905a0c00bcae093b4360309e0e3f2cdece2489c458f49: no result in JSON-RPC response

It is a known issue, It should be included in the next milestone