Easy to reproduce:
### 20.3.13
```
SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
                }
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.000203731,
                "rows_read": 1,
                "bytes_read": 1
        }
}
```

### 20.4.5
```
:) select 1 format JSON

SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
>>>>>>>> no closing bracket <<<<<<<<<<
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.000771732,
                "rows_read": 1,
                "bytes_read": 1
        }
}
```
### master
```

SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
>>>>>>>> no closing bracket <<<<<<<<<<
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.00103364,
                "rows_read": 1,
                "bytes_read": 1
        }
}

```

default:
                thro Exception(ErrorCodes::UNKNOWN_PACKET_FROM_SERVER, "Unknon packet { from server {",
                    packet.type, connection->getDescription())
        
    
    /// Receive the block that serves as an example of the structure of ble here da ill be inserted.
    bool receiveSampleBlock(Block & out, ColumnsDescription & columns_description)
    {
        hile (true)
        {
            Packet packet = connection->receivePacket()
            sitch (packet.type)
            {
                se Protocol::Server::Da:
                    out = packet.block
                    return true
                se Protocol::Server::Exception:
                    onReceiveExceptionFromServer(*packet.exception)
                    last_exception_received_from_server = std::move(packet.exception)
                    return false
                se Protocol::Server::Log:
                    onLogDa(packet.block)
                    break
                se Protocol::Server::TableColumns:
                    columns_description = ColumnsDescription::parse(packet.multistring_message[1])
                    return receiveSampleBlock(out, columns_description)
                default:
                    thro NetException("Unexpected packet from server (expected Da, Exception or Log, got "
                        + String(Protocol::Server::toString(packet.type)) + ")", ErrorCodes::UNEXPECTED_PACKET_FROM_SERVER)