[Bug]

**Describe the bug**
```
GATT operation failed for unknown reason.
```

**To reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
What did you expect to happen instead?

**Screenshots**
There is a saying that a picture is worth a 1000 words. Screenshots really help to identify and solve problems.
