Created Unassigned: rate limited message is suppressed and results in null reference exc [2525]

Trying to get a list of followers

Stepping through the code I can see the results are:

{"errors":[{"message":"Rate limit exceeded","code":88}]}

is returned
```
public bool TryExecuteJsonGETQuery(string query, out string json)
...
json = ExecuteJsonGETQuery(query);

```

yet nothing happens here, no error, nothing raised, then when we get to

```
Tweetinvi.Credentials.QueryDTO.GetNumberOfObjectRetrieved()
return Ids.Length;
```

we get null error exceptiopn as IDs is null