NPE on pull/push to crx

on AEM 6 I have:

"Failed copying contents"

```
Connecting via JCR remoting to http://localhost:4502/crx/server
[ERROR] checkout: java.lang.NullPointerException: null
```

Configuration:
- /home/punky/Programs/vault-cli-3.1.6
- [rest of options: default values]
