Failed to load cameras

[o---]

Bevor you create a new issue:

- [X] I searched for similar issues and did not find one
- [X] I'm using the latest version available in the [Windows Store](https://www.microsoft.com/store/apps/9NW16X9JB5WV)

I'm submitting a...:

• Bug report (I searched for similar issues and did not find one)

Current behavior:

[INFO][27.05.2020 21:53:39]: Started QR Code scanner task. 
[ERROR][27.05.2020 21:53:39]: Failed to load cameras. System.NullReferenceException: Object reference not set to an instance of an object.
   at UWPX_UI.Controls.CameraPreviewControl.<StartPreviewAsync>d__18.MoveNext() + 0x1ec

[ERROR][27.05.2020 21:53:39]: Failed to load cameras. System.NullReferenceException: Object reference not set to an instance of an object.
   at UWPX_UI.Controls.CameraPreviewControl.<StartPreviewAsync>d__18.MoveNext() + 0x1ec

[INFO][27.05.2020 21:53:43]: Ended QR Code scanner task. 

Expected behavior:

Camera starts and QR code is scanned.

Minimal reproduction of the problem with instructions:

1. Attempt to scan QR code
2. Check logs

Environment:

App Version(s): 
v.0.26.2.0 

Windows 10 Version Number: 
- [X] 1909
- [ ] 1809
- [ ] 1803
- [ ] 1709
- [ ] 1703
- [ ] 1607
- [ ] 1511
- [ ] 1507
- [ ] Insider Build (build number: )
- [ ] Misc:

Device form factor:
- [x] Desktop
- [ ] Mobile
- [ ] Xbox
- [ ] Surface Hub

Where did you got the APP from?
- [X] [Windows Store](https://www.microsoft.com/store/apps/9NW16X9JB5WV)
- [ ] Self-build, using a provided release source
- [ ] Self-build, repo cloned at [dd.mm.yyy] <!-- When did you clone the repo! -->
- [ ] Misc, got it from... <!-- Please tell us your source! -->

[COM8]

I will have a look at it.
Thanks for reporting!