"attributes construct error" in gcpviz

Hi,

I am seeing an error when creating the gke.svg file using the default queries - I get: "error on line 530 at column 98: attributes construct error"

If I look at the content:

```
522
523
524 N_4602
525
526
527
528
529 Namespace: kube-node-lease
530
531
532
```

Removing this section just pushes the error to the next comparable block.

Running on:
- Ubuntu 18.04.6 LTS
- go version go1.10.4 linux/amd64
- dot graphviz version 2.40.1 (20161225.0304)