Problem with saving the config
**Describe the bug**
When i try to add a camera I got 500 error from the console I get
```
[1/22/2022, 6:24:08 PM] [camera.ui] GET /api/config?target=config 200 1.759 ms - 192
Error: Can not save config, target cameras not found in config!
    at Function.writeToConfig (file:///usr/lib/node_modules/camera.ui/src/services/config/config.service.js:201:15)
    at Module.createCamera (file:///usr/lib/node_modules/camera.ui/src/api/components/cameras/cameras.model.js:29:19)
    at insert (file:///usr/lib/node_modules/camera.ui/src/api/components/cameras/cameras.controller.js:22:39)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
```

**To Reproduce**
Add camera

**Expected behavior**
Camera to be added



**Environment**
- Node.js Version: v17.4.0
- Camera UI Version: 1.1.2
- Operating System: Ubuntu 20.04 minimal
- Browser: Brave latest version
