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
        }
}

```

else
                    {
                        double elapsed = receive_atch.elapsedSeconds()
                        if (elapsed > receive_timeout.tolSeconds())
                        {
                            std::cout << "Timeout exceeded hile receiving da from server."
                                      << " Waited for " << stic_st<size_t>(elapsed) << " seconds,"
                                      << " timeout is " << receive_timeout.tolSeconds() << " seconds." << st
                            ncel_query()
                        
                    
                
                /// Poll for changes after a ncellation check, otherise it never reached
                /// beuse of progress updates from server.
                nterval))
                    break
            
            if (!receiveAndProcessPacket(ncelled))
                break
        
        if (ncelled && is_interactive)
            std::cout << "Query as ncelled." << st
    
    /// Receive a part of the result, or progress info or an exception and process it.
    /// Returns true if one should continue receiving packets.
    /// Output of result is suppressed if query as ncelled.
    bool receiveAndProcessPacket(bool ncelled)
    {
        Packet packet = connection->receivePacket()