Problem with API call
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### Description

[Description of the issue]

### Steps to Reproduce

1. [First Step]
2. [Second Step]
3. [and so on...]

### Expected behavior
![capture](https://user-images.githubusercontent.com/26274812/47062448-48eb1900-d200-11e8-9d92-17813dcbadb9.PNG)

### Actual behavior

[What actually happens]

### Reproduces how often
**Always**
### Version
**Lastest
Ubuntu 16.04**

### Additional Information
Try with other port or don't set api field in config.json (will bind with 127.0.0.1) but cannot CURL from local machine too.
